Schneider Electric XB5AA31 — 22mm Green Pushbutton Selection Guide

By Abdullah Zahid
14 min read
Schneider Electric XB5AA31 green 22mm flush pushbutton for industrial control panel start command

Schneider Electric XB5AA31 Push Button, Harmony XB5, Plastic, Flush, Green, 22mm, Spring Return, Unmarked, 1NO — Specs, Price, and Selection Guide

If you are specifying or replacing a 22mm green momentary pushbutton for an industrial control panel, the Schneider Electric XB5AA31 is one of the most common parts you will encounter. It is a non-illuminated, spring-return pushbutton with a 1NO contact configuration, 10A at 600V AC contact rating, and a plastic flush bezel — the workhouse format for start, jog, and auxiliary operator commands inside the Harmony XB5 ecosystem. The decision most buyers face at this stage is not whether they need a pushbutton; it is whether this specific SKU matches their terminal type, panel cut-out, contact action, and color requirement. This guide answers exactly that.

If you have already confirmed the XB5AA31 is the correct part, check current pricing and availability at LeadTime.ca — we ship worldwide.

Who Should Buy the XB5AA31 — and Who Should Not

The XB5AA31 is the right choice for controls engineers and maintenance technicians who need a straightforward, non-illuminated momentary pushbutton for non-critical operator commands in standard industrial panels. It is right for your application if all of the following apply:

  • Your panel uses a standard 22mm diameter cut-out (not a 30mm format)
  • Your circuit requires 1NO momentary action — press to activate, release to deactivate via spring return
  • Your wiring harness uses screw clamp terminals, not push-in connectors or Faston tabs
  • The plastic bezel meets your electrical insulation and chemical resistance requirements
  • Your enclosure rating requirement is satisfied by NEMA 4/4X/13 or IP65/IP66 minimum
  • Your circuit does not exceed 10A at 600V AC maximum contact rating

If you need illuminated operator feedback, the XB5AVM31 is the correct choice. If the application is a stop or alarm command, the red XB5AA32 is required. If the environment demands a metal bezel for high-impact or corrosive conditions, the Harmony XB4 metal series is appropriate instead.

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What the XB5AA31 Does in a Control Panel

The Schneider Electric XB5AA31 is a non-illuminated, green flush pushbutton in the Harmony XB5 series. It provides a single momentary control impulse to the downstream circuit — the contact closes on press and opens automatically when the operator releases, thanks to the spring-return mechanism. That spring-return behavior is not incidental; it is what makes this part correct for start and jog commands where a maintained contact would create unintended machine behavior.

The plastic housing performs two functions simultaneously: it provides double electrical insulation between operator and live circuit, and it resists industrial solvents that would degrade a painted metal surface over time. The green color is the IEC and NEMA color-coding standard for run and go commands, which means panel labeling, operator training, and safety audits all align with this designation without requiring any special justification.

The 22mm panel cut-out size is the globally dominant standard for industrial pushbuttons across North American and European machine-building. That means the XB5AA31 drops into the vast majority of existing panel housings without modification. Combined with its compatibility with Harmony XB5 contact blocks and accessories — and its compatibility with Harmony XB4 metal housings — this pushbutton can be customized or expanded without replacing the entire assembly.

Where the XB5AA31 Sits in Your System Architecture

The XB5AA31 is the operator-facing input device in the control chain — the physical point where a human command becomes a discrete electrical signal delivered to a PLC or relay circuit.

  • PLC or controller (receives discrete input state from pushbutton circuit)
  • Input terminal block or I/O card (routes 24VDC or 120VAC signal from panel wiring)
  • XB5AA31 pushbutton (1NO contact closes on press, opens on spring return)
  • Screw clamp terminal wiring (connects common and normally-open terminals to circuit wiring)
  • Panel enclosure rated NEMA 4/4X/13 or IP65/IP66 minimum (protects internal components from dust and water spray)

Typical Applications and Deployment Scenarios

In discrete manufacturing — automotive assembly lines, general machining, packaging equipment — the XB5AA31 appears most often as the green start button at an operator station. One press triggers the PLC input that initiates a machine cycle; releasing the button returns the contact to its open state and the control logic holds the cycle via internal PLC logic or a seal-in relay, not via a maintained pushbutton contact.

Food and beverage processors use this pushbutton widely because the plastic construction withstands sanitation chemical sprays that attack metal oxide coatings. The IP65/IP66 rating means it survives directed water spray during washdown cycles, which is a baseline requirement in most food processing environments.

Maintenance technicians reach for the XB5AA31 specifically when replacing worn pushbuttons in existing Harmony XB5 installations. Because the base unit is compatible with existing contact blocks and panel cut-outs, the swap takes minutes without any panel modification or contact block replacement. That retrofit simplicity is why this part stays perpetually in stock at authorized distributors worldwide.

OEM panel builders in industrial HVAC, water treatment, and agricultural machinery use the XB5AA31 as the default non-critical pushbutton for auxiliary commands — manual override, cycle reset, auxiliary jog — where illuminated feedback is not required and cost optimization matters across high-volume panel builds.

Application Typical Deployment
Machine start/stop control Operator station in discrete manufacturing; 1NO contact triggers PLC input for cycle start
Pump or motor activation Momentary contact energizes auxiliary relay controlling larger motor load
Retrofit replacement Direct swap for worn XB5AA31 in existing Harmony XB5 panel without redesign
OEM panel build Cost-effective standard pushbutton for non-critical auxiliary functions in new equipment
Food and beverage washdown areas IP65/IP66 plastic construction withstands sanitation chemical spray environments
Industrial HVAC and water treatment Manual override or auxiliary command pushbutton in process control enclosures

XB5AA31 Specifications and How It Compares to Alternatives

Specification XB5AA31 Value
Panel Cut-Out Diameter 22mm
Contact Configuration 1NO (Normally Open), momentary spring return
Contact Rating 10A at 600V AC maximum
Actuator Color Green (industry standard for start/run commands)
Actuator Style Round, flush profile
Housing Material Plastic (solvent-resistant, double electrical insulation)
Terminal Type Screw clamp
Enclosure Rating NEMA 4/4X/13; IP65/IP66 minimum confirmed — verify datasheet for IP69 claim
Operating Temperature -40 to +70 degrees Celsius
Standards and Certifications UL 508, CSA C22.2 No. 14, EN/IEC 60947-1, EN/IEC 60947-5-4, JIS C 4520, RoHS compliant

Full technical specifications are available on the product page at LeadTime.ca.

The table below compares the XB5AA31 to its closest alternatives across illumination, voltage rating, IP protection, and terminal type — the four variables that most frequently drive a different selection:

Feature Schneider Electric XB5AA31 Schneider Electric XB5AVM31 Siemens 3SU1250-0AB20-0AA0 Eaton M22-P-G
Panel Size 22mm 22mm 22mm 22mm
Illumination None Yes — Green LED Yes — Multi-color Yes — Multi-color LED
Contact Action Momentary Momentary Momentary Momentary
Contact Rating 10A at 600V AC 10A at 600V AC 10A at 240V AC 10A at 250V AC
IP Rating IP65/IP66 IP65/IP66 IP65/IP67 IP67/IP69K
Terminal Type Screw clamp Screw clamp Spring terminal Screw clamp
Best For Cost-effective non-critical control; Harmony XB5 retrofit Illuminated feedback required; Harmony XB5 ecosystem Heavy-duty industrial applications with spring terminal preference Marine, outdoor, or high-pressure washdown environments requiring IP69K

Note: The XB5AVM31 costs approximately two to three times more than the XB5AA31 and requires additional wiring for the LED power supply. The Siemens 3SU1250-0AB20-0AA0 uses a spring terminal that may require a wiring adapter if your harness uses screw clamp ends. The Eaton M22-P-G commands a premium price justified by its IP69K rating for high-pressure spray environments. If none of those features applies to your installation, the XB5AA31 is the correct and most cost-efficient choice. Check current availability and pricing at LeadTime.ca.

Expert Verdict: Is the XB5AA31 Right for Your Panel?

The XB5AA31 earns its place as the default green pushbutton for the Harmony XB5 ecosystem because it does exactly what a non-critical momentary pushbutton must do — reliably and without complication. The 10A at 600V AC contact rating covers the full range of typical PLC discrete input circuits and auxiliary relay coils. The operating temperature span of -40 to +70 degrees Celsius means it survives both unheated outdoor enclosures in winter and heated process areas in summer without de-rating. The UL 508, CSA C22.2 No. 14, and EN/IEC 60947 certifications clear the compliance requirements for machine builders shipping equipment to North American and European markets simultaneously. For maintenance technicians replacing worn buttons in existing Harmony XB5 panels, it is a direct swap that takes minutes. For OEM panel builders optimizing cost across a high-volume production run, it is the logical default for any pushbutton position that does not require illumination or latching.

The XB5AA31 is not the right choice for every 22mm pushbutton position, and it is worth being specific about where it falls short. If the operator needs visual confirmation that a command was received — a common requirement in noisy environments where hearing a relay click is impossible — the XB5AVM31 with its green LED is the correct selection, accepting the higher unit cost and the additional LED wiring. If the pushbutton is performing a stop or alarm function, the red XB5AA32 is mandatory under most safety color-coding standards; green is not an acceptable substitute regardless of panel labeling. If the environment involves high-pressure spray — pressure washing in food processing at close range, marine spray, or chemical immersion — verify whether IP65/IP66 is sufficient or whether IP69K capability is required, in which case the Eaton M22-P-G or a similar IP69K-rated alternative is the better specification. And if your control logic requires a maintained contact rather than momentary action, you need a different contact block configuration entirely.

From a procurement standpoint, the XB5AA31 is generally a short-lead-time part available through authorized Schneider Electric distributors worldwide. The risk in ordering this part is not availability — it is ordering the wrong variant due to the close similarity of model numbers across the Harmony XB5 color and illumination range. That is where ordering through a specialist distributor adds real value: confirmation that the SKU matches your stated application before the order ships, not after. View current stock status and pricing for the XB5AA31 at LeadTime.ca — we ship worldwide and can confirm compatibility with your existing panel and wiring before your order is placed.

For volume pricing on OEM panel builds or to verify lead time before committing to a production schedule, contact the LeadTime.ca team directly — we ship worldwide and support procurement teams globally.

What Engineers Need to Know Before Ordering the XB5AA31

Community discussion specific to the XB5AA31 is sparse in major automation forums — which is itself informative. A pushbutton that generates extensive forum threads is usually one with unexpected behavior, compatibility surprises, or quality concerns. The XB5AA31 does not appear to generate that volume of troubleshooting conversation, consistent with a part that behaves predictably when specified correctly. What does surface consistently, however, are ordering errors — and they are almost entirely preventable with a 60-second pre-order check.

The most common ordering error pattern for the Harmony XB5 series is color confusion. The XB5AA31 (green), XB5AA32 (red), and XB5AA34 (yellow) differ by a single digit at the end of the model number. Distributors who do not prominently surface color in search results make it easy to click the wrong SKU, especially on retrofit orders where the technician is working from a worn label or a handwritten part number. A second pattern is the illuminated versus non-illuminated mistake: the XB5AVM31 and XB5AVB31 look similar in part number structure to the XB5AA31, and the illuminated variants cost two to three times more and require different wiring. If you receive a unit that has a power connection lead and a lamp socket where you expected none, you have ordered the wrong part.

The terminal type issue is the one that causes the most installation delay. The XB5AA31 uses screw clamp terminals. If your existing control harness was built with Faston (quick-disconnect) tabs or push-in connectors, you cannot connect without fabricating an adapter or re-crimping the harness ends. Photograph your existing terminal connections before ordering any replacement pushbutton and verify the terminal type explicitly — do not assume that all 22mm pushbuttons use the same connection format. The wrong-part checklist below covers all critical verification steps verbatim from the product brief; work through each one before submitting your order.

Wiring and Installation Overview

The XB5AA31 installs through a 22mm panel cut-out with the actuator facing the operator side of the panel. Before any wiring work, de-energize the circuit and verify zero voltage at the terminal connection points. The following overview covers the key steps and checks — for full wiring procedures, refer to the Schneider Electric Harmony XB5 installation documentation.

  • Verify the panel cut-out is 22mm diameter and clean the area of debris before inserting the unit; insert the pushbutton from the front face of the panel and secure per the housing design
  • Route control wiring to the rear of the panel where the screw clamp terminals are accessible; strip 5 to 8mm of insulation from each wire end before insertion
  • Connect one wire to the Common (C) terminal and one wire to the Normally Open (NO) terminal of the 1NO contact block; tighten each screw clamp and perform a gentle pull test to confirm wire retention
  • Before energizing, manually press the actuator and verify smooth spring-return action with a distinct tactile click confirming contact block engagement
  • After power-on, use a multimeter set to resistance mode to confirm open circuit (infinite ohms) between C and NO at rest, and near-zero ohms when the button is pressed — then verify correct PLC input state change under live conditions

Compatible Modules and System Expansion

One of the practical advantages of the Harmony XB5 platform is that the base pushbutton unit — including the XB5AA31 — is compatible with a range of contact blocks and accessories without replacing the housing. This means the XB5AA31 actuator and bezel you install today can be reconfigured for a different contact arrangement by swapping the rear-mounted contact block only. The XB5AA31 is confirmed compatible with the following Harmony XB5 platform components:

  • Harmony XB5 contact blocks — additional 1NO, 1NC, or combination contact configurations mountable to the same base housing
  • Harmony XB4 metal series housings — the XB5AA31 actuator is compatible with XB4 metal panel housings for applications requiring metal construction without replacing the actuator
  • Harmony XB5 accessories — legend plates, label holders, and protective covers within the XB5 accessory range mount to the standard 22mm bezel without modification

Wrong-Part Prevention Checklist

Work through each item below before placing your order. These checks catch the most common ordering errors for the XB5AA31 and related Harmony XB5 variants:

  1. Confirm panel cut-out size is 22mm (not 30mm XB5 variant)
  2. Verify contact block is 1NO momentary, not latching or timed action
  3. Check terminal type is screw clamp (not push-in connector or Faston)
  4. Confirm green color is correct for application (XB5AA32 is red, XB5AA34 is yellow, etc.)
  5. Verify spring-return (impulse) action is required, not maintained contact
  6. Check that plastic bezel meets electrical insulation and chemical resistance needs
  7. Confirm NEMA 4/4X/13 and IP65+ rating is sufficient for your environment
  8. Ensure 600 VAC maximum voltage and 10A contact rating are not exceeded in your circuit

If any item on this checklist does not match your application, stop before ordering and identify the correct variant. Contact the LeadTime.ca team to confirm the right SKU for your panel — we can cross-reference your requirements against the full Harmony XB5 range before your order ships.

Frequently Asked Questions

Does the XB5AA31 work with existing Harmony XB5 contact blocks already mounted in my panel?

Yes. The XB5AA31 base unit is designed for the Harmony XB5 modular platform and is compatible with the range of XB5 contact blocks. It is also noted as compatible with Harmony XB4 metal housings, which extends its use to panels originally built around the XB4 series. Verify contact block configuration (1NO momentary) matches your control logic before assuming compatibility with a specific contact block model.

Is the XB5AA31 rated for outdoor or washdown use?

The XB5AA31 carries a minimum confirmed rating of IP65/IP66 and NEMA 4/4X/13, which covers dust-tight and directed water spray protection. It is appropriate for sheltered outdoor enclosures and wet factory washdown environments. Some distributor sources list IP69, but this should be verified against the official Schneider Electric datasheet before specifying for high-pressure spray applications. If your environment involves sustained high-pressure chemical spray or immersion, consider a part with a confirmed IP69K rating.

What is the difference between the XB5AA31 and the XB5AA32?

The XB5AA32 is identical in form, fit, and electrical function to the XB5AA31 — 22mm, 1NO momentary, screw clamp, plastic bezel — with one critical difference: the actuator color is red. Red is the IEC and NEMA standard for stop and alarm commands. The XB5AA31 green is for start and run commands. These two models must not be substituted for each other in any panel where operator color-coding is part of the safety design. The last two digits of the model number encode the color across the Harmony XB5 range.

Can the XB5AA31 handle 480V AC circuits directly?

The XB5AA31 contact rating is 10A at 600V AC maximum, so 480V AC is within the rated voltage. However, confirm that your total circuit current does not exceed 10A at the pushbutton contact. If your circuit drives loads approaching or exceeding this current rating, interpose a relay or contactor rather than running the full load current through the pushbutton contact directly.

Is the XB5AA31 a direct replacement for an older worn pushbutton of the same model?

For like-for-like replacement within an existing Harmony XB5 panel, the XB5AA31 is a direct swap requiring no panel modification. The 22mm cut-out, screw clamp terminals, and Harmony XB5 contact block interface are unchanged across the current product generation. Verify that the contact block from the old installation is also in good condition — the actuator and contact block are separate components, and a worn contact block should be replaced at the same time as the actuator.

What happens if my circuit exceeds the 10A contact rating on the XB5AA31?

Exceeding the 10A at 600V AC rated contact load will accelerate contact wear, produce arcing at the contact interface, and can result in contact welding where the normally-open contacts fuse closed. This creates a dangerous condition where the pushbutton no longer controls the circuit. If your load exceeds the rated contact capacity, install an interposing relay rated for the load and use the XB5AA31 to drive only the relay coil current, which will be well within rating.

Why Order the XB5AA31 From LeadTime.ca

  • Global shipping — LeadTime.ca fulfills orders worldwide, not limited to any single region or country
  • Real-time stock verification — confirm availability before committing your build schedule, not after a failed delivery
  • Technical support — confirm correct SKU against your panel wiring, terminal type, and contact configuration before the order ships
  • Volume and OEM pricing — available for integrators and panel builders ordering across multiple projects; contact for current volume pricing
  • Sourcing hard-to-find variants — if the standard XB5AA31 is temporarily backordered, the team can identify compatible alternates within the Harmony XB5 range

XB5AA31 At-a-Glance Summary

  • 22mm panel cut-out — fits the globally dominant industrial pushbutton standard across North American and European panels
  • 1NO momentary spring-return action — contact closes on press, opens on release; correct for start, jog, and auxiliary commands
  • 10A at 600V AC maximum contact rating — covers typical PLC discrete input and relay coil circuits
  • Green actuator color — IEC and NEMA standard for run/go operator commands; not a substitute for red stop commands (XB5AA32)
  • Plastic housing — solvent-resistant, double electrical insulation; NEMA 4/4X/13 and IP65/IP66 minimum confirmed
  • Screw clamp terminals — verify this matches your harness before ordering; push-in and Faston variants require different SKU
  • Operating temperature -40 to +70 degrees Celsius — industrial grade for heated and unheated environments
  • Certified to UL 508, CSA C22.2 No. 14, EN/IEC 60947-1, EN/IEC 60947-5-4, JIS C 4520, and RoHS compliant
  • Modular compatibility with Harmony XB5 contact blocks and Harmony XB4 metal housings — customizable without housing replacement
  • Direct retrofit replacement for worn XB5AA31 units in existing Harmony XB5 installations — no panel modification required

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