Schneider Electric LP1K0910BD TeSys K Contactor — Specs & Buying Guide

By Abdullah Zahid
14 min read
Schneider Electric LP1K0910BD TeSys K 3-pole 9A 24V DC coil miniature IEC contactor for small motor control panels

Schneider Electric LP1K0910BD TeSys K Contactor, 3P, AC-3 ≤ 440 V, 9 A, 1 NO Auxiliary, 24 V DC Coil — Full Specs, Selection Guide and Buying Advice

Controls engineers specifying compact motor starters and panel builders replacing existing TeSys K units both land on the same critical question: is the LP1K0910BD exactly the right variant, or is one digit off in the catalog number about to cause a costly delay? This is a 3-pole IEC miniature contactor in the TeSys K family, rated 9 A AC-3 with a 24 V DC coil and one built-in NO auxiliary contact — a clean match for PLC-driven motor control where DIN-rail space is tight. Getting the coil code and contact configuration confirmed before you order is what separates a smooth commissioning from a rework call.

Note on naming: The LP1K0910BD is a Schneider Electric (Telemecanique / TeSys K) product. Legacy labels may show Telemecanique or Square D branding depending on region and era, but the manufacturer is Schneider Electric and the authoritative specifications come from se.com.

If you have already confirmed this is the right part, check current pricing and availability at LeadTime.ca — ships worldwide.

Who Should Buy the LP1K0910BD — and Who Shouldn't

The LP1K0910BD is the right contactor when all five of these conditions are true for your application:

  • Your control system delivers 24 V DC coil voltage — the "BD" suffix designates a DC coil, not AC, and the two are not interchangeable.
  • Your motor or load draws no more than 9 A at AC-3 duty, corresponding to approximately 4 kW at 400 V three-phase.
  • You need 3-pole main contacts (3NO) plus exactly 1 NO auxiliary contact for signaling or a holding circuit — no NC auxiliary is included.
  • Your panel uses DIN-rail or panel-mount installation and the TeSys K miniature footprint (approximately 45 × 58 × 57 mm) fits the available space.
  • You are coordinating with TeSys K or LC1K overload relays and accessories already specified for the system.

If your control voltage is 24 V AC, 110/120 V AC, or another coil rating, you need a different suffix variant — for example, LP1K0910B7 for 24 V AC. If the motor exceeds the 9 A AC-3 rating or requires built-in NC auxiliary contacts for interlocking, a different TeSys K rating or the TeSys D family is the correct specification.

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What the LP1K0910BD Actually Does in a Control Panel

The LP1K0910BD is a 3-pole IEC miniature contactor from Schneider Electric's TeSys K family. Its job is straightforward: it uses a 24 V DC coil signal — typically from a PLC digital output — to switch three-phase power to a small motor or other AC load. The main contacts are rated 9 A at AC-3 utilization category up to 440 V, which covers approximately 4 kW motors at 400 V in direct-on-line starting applications. A single built-in NO auxiliary contact is available for status feedback, holding circuits, or interlock logic.

The TeSys K platform is Schneider Electric's miniature IEC contactor line, sitting below the larger TeSys D family in both physical size and current range. The LP1K0910BD's approximately 45 × 58 × 57 mm footprint makes it one of the more space-efficient choices for motor control in crowded OEM panels and machine control cabinets. It is not a self-protecting starter — external motor protection through a coordinated overload relay is required for a complete motor starter assembly.

Typical System Architecture for TeSys K Motor Starters

The LP1K0910BD sits in the power switching layer of the control circuit, between the upstream protection device and the motor terminals. Here is where it fits in a typical deployment:

  • PLC or control system provides 24 V DC digital output signal to energize the LP1K0910BD coil.
  • Upstream short-circuit protection (fuses or circuit breaker) coordinates with the contactor for fault protection — the LP1K0910BD does not provide internal short-circuit protection.
  • LP1K0910BD main contacts switch three-phase line voltage to the load on coil energization.
  • TeSys K overload relay (LC1K or compatible) mounts downstream of the contactor to provide motor overload protection and complete the motor starter assembly.
  • The built-in 1 NO auxiliary contact feeds status back to the PLC input or drives a pilot light or interlock circuit.

Industries and Applications Where LP1K0910BD Is Commonly Specified

The LP1K0910BD is a standard specification in OEM machinery where small three-phase motors are controlled by PLC 24 V DC outputs. Conveyor drives, small pump sets, and fan motors in the sub-4 kW range at 400 V are the most common motor types. Panel builders value the TeSys K form factor when multiple motor starters must fit on a single DIN rail in a compact enclosure.

In HVAC equipment and building automation systems, the LP1K0910BD is used to switch small fan and pump motors where the control system operates on 24 V DC logic. The compact footprint is an advantage in electrical rooms where multiple starters must coexist with other control devices.

Maintenance and MRO teams frequently specify the LP1K0910BD as a direct replacement for worn or failed TeSys K contactors in existing equipment. Matching the catalog number exactly — including the BD coil suffix — is critical in replacement scenarios to avoid introducing a mismatched coil voltage into a live panel.

Packaging machinery and light manufacturing lines use the LP1K0910BD where frequent start-stop cycles on small motors are needed and panel space is at a premium. Food and beverage processing lines with auxiliary conveyor drives represent another common deployment.

Application Typical Deployment
OEM machine control panel PLC 24 V DC output driving multiple LP1K0910BD contactors for small motor axes
Conveyor and material handling Direct-on-line starter for sub-4 kW conveyor drive motors with TeSys K overload relay
HVAC fan and pump control Building automation controller switching small three-phase fan or pump via 24 V DC coil
Packaging machinery Compact multi-starter panel with several LP1K0910BD units on a single DIN rail
MRO replacement in legacy panels Direct swap for failed TeSys K contactor, matching catalog number and coil suffix exactly
Food and beverage auxiliary drives Auxiliary conveyor or dosing pump starter controlled via PLC in hygienic enclosure

Key Electrical and Mechanical Specifications

Parameter Value Notes
Catalog number LP1K0910BD Schneider Electric / TeSys K; verify suffix before ordering
Main contacts 3NO, 3-pole For three-phase loads
Utilization category AC-3, up to 440 V Per TeSys K datasheet
Rated operational current (Ie) 9 A AC-3 At specified voltage per datasheet
Typical motor power at 400 V Approximately 4 kW AC-3 duty, direct-on-line starting
Coil voltage 24 V DC "BD" suffix designates 24 V DC coil
Auxiliary contact 1 NO Built-in; additional blocks available from TeSys K accessories
Mounting DIN rail or panel mount Miniature TeSys K footprint
Approximate dimensions (W × H × D) 45 × 58 × 57 mm From distributor technical data; confirm from official datasheet
Degree of protection IP2X (terminals) TeSys K family-level rating

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

LP1K0910BD vs Other TeSys K Variants — Which One Do You Actually Need?

The LP1K0910 base model is available in multiple coil voltage variants. The suffix after the base number is the critical differentiator — ordering the wrong suffix means the contactor will not respond to your control voltage.

Model Coil Voltage Coil Type Auxiliary Contact Typical Use
LP1K0910BD 24 V DC DC 1 NO PLC 24 V DC digital output control
LP1K0910B7 24 V AC AC 1 NO AC control circuits at 24 V
LP1K0910F7 110 V AC AC 1 NO North American AC control voltage panels
LP1K0910P7 230 V AC AC 1 NO European-style AC control circuits
LP1K0901BD 24 V DC DC 1 NC Applications requiring NC auxiliary for interlocking

If your motor exceeds the 9 A AC-3 rating of the TeSys K series or you need built-in NC auxiliaries without an add-on block, the TeSys D family is the logical next step up. For applications requiring 24 V DC coil control at higher motor currents, review the TeSys D LC1D range. If the LP1K0910BD is the correct spec for your build, check current stock and availability at LeadTime.ca — we ship to customers worldwide.

Expert Verdict: Is the LP1K0910BD the Right Contactor for Your Build?

The LP1K0910BD earns its place in any compact motor control panel where a 24 V DC PLC output needs to switch a small three-phase motor. The 9 A AC-3 rating covering approximately 4 kW at 400 V makes it a practical fit for the majority of auxiliary and small process motors found in OEM machinery, conveyors, HVAC, and packaging lines. Its TeSys K footprint — approximately 45 × 58 × 57 mm — is a genuine advantage when multiple starters must share a DIN rail without expanding the enclosure. For the controls engineer or panel builder who has confirmed the motor current, verified the 24 V DC control voltage, and mapped out a 1 NO auxiliary contact as sufficient for their interlock logic, this is a straightforward, dependable specification.

Where the LP1K0910BD is not the right answer is equally clear. If the motor current pushes above 9 A AC-3, the TeSys D family is the appropriate step up. If the control system delivers AC voltage — even 24 V AC — the BD suffix is wrong and the LP1K0910B7 or another AC coil variant must be specified. Applications that need built-in NC auxiliary contacts for safety interlocking without adding a separate auxiliary block should look at the LP1K0901BD (1 NC auxiliary) or evaluate whether an auxiliary contact block from the TeSys K accessory range solves the problem more flexibly. And if communication-level motor management or soft-start capability is in scope, the TeSys K platform is not the right family regardless of current rating.

From a procurement standpoint, the LP1K0910BD is a well-established, widely stocked part in the TeSys K range — but availability by region and channel can vary, particularly for MRO replenishment in time-sensitive maintenance scenarios. The most common source of downtime in this part category is not hardware failure but wrong-part ordering: a coil code digit transposed, an NC auxiliary assumed where only NO is present, or a TeSys K unit ordered where a TeSys D frame was required. Working through a specialist distributor who can cross-check the coil suffix against your schematic, confirm overload relay coordination, and verify real-time stock before your build schedule locks is a meaningful risk reduction. View current availability for the LP1K0910BD at LeadTime.ca and confirm stock before committing your panel schedule.

For volume pricing on multiple units or to discuss lead time for a larger project build, contact the LeadTime.ca team directly — we ship worldwide and can assist with equivalents if your primary part is constrained.

What Engineers Need to Know Before Ordering the LP1K0910BD

Community discussion specific to the LP1K0910BD model number is limited across forums including Reddit r/PLC, PLCTalk, PLCS.net, MrPLC, and distributor Q&A sections. What does appear consistently in TeSys K threads is a picture of a reliable, well-regarded miniature contactor platform where the hardware itself rarely draws complaints — but where ordering errors account for the majority of reported problems. The compact size and DIN-rail convenience of the TeSys K line are routinely praised by panel builders who have moved from larger NEMA or TeSys D contactors for small motor applications, particularly in multi-starter panels where every millimeter of rail space matters.

The most frequently reported frustration across TeSys K community discussions is coil code confusion. The suffix system that differentiates coil voltages — BD for 24 V DC, B7 for 24 V AC, F7 for 110 V AC, and others — looks similar at a glance, and buyers replacing parts from a nameplate or worn label have reported receiving the wrong coil voltage because the trailing characters were misread or assumed rather than verified. A 24 V DC coil contactor installed in an AC control circuit, or vice versa, will either fail to pull in or potentially damage the coil. Forum users also note that the built-in auxiliary contact on the base LP1K09 series is 1 NO only — engineers who assume a combination 1NO+1NC auxiliary is standard have had to add a separate auxiliary contact block or re-specify the part entirely.

A recurring ordering mistake reported in distributor Q&A channels involves assuming TeSys K and TeSys D contactors of similar current ratings are physically interchangeable. They are not — the mounting footprint, terminal pitch, and accessory ecosystem differ between families, and substituting frame sizes mid-project creates rework. Before placing an order, use the checklist below to eliminate the most common misspecification risks for the LP1K0910BD. If there is any ambiguity in the schematic, the part number on the existing contactor, or the overload relay coordination, a specialist distributor review before ordering is the most efficient path to a correct first delivery.

Wiring and Installation Overview

The following bullets summarize the key installation requirements for the LP1K0910BD. Full wiring diagrams and torque specifications are provided in the Schneider Electric TeSys K installation documentation — always refer to the manufacturer's instructions for complete procedures.

  • Mount the LP1K0910BD on a standard DIN rail or panel surface; confirm the approximately 45 × 58 × 57 mm footprint clears adjacent devices before installation.
  • Connect three-phase line conductors to the main power terminals (L1, L2, L3) and load conductors to the output terminals (T1, T2, T3) using screw clamp terminals, observing the torque values specified in the manufacturer datasheet.
  • Wire the 24 V DC coil to the designated coil terminals, observing polarity requirements for DC coil types as indicated in the TeSys K wiring diagram.
  • Connect the built-in NO auxiliary contact terminals into the control circuit for status feedback, holding, or interlock functions — verify the auxiliary circuit voltage and current do not exceed the auxiliary contact rating from the datasheet.
  • Before energizing, verify zero energy on all circuits, confirm coil voltage matches the 24 V DC supply, check control circuit polarity, and perform a manual pull-in test to confirm free mechanical operation before applying load.

Wrong-Part Prevention Checklist Before You Order

Use this checklist against your schematic and motor nameplate data before finalizing the LP1K0910BD order. These are the exact checks that prevent the most common and costly mis-orders in TeSys K procurement:

  1. Confirm control voltage is 24 V DC; "BD" suffix is DC coil – do not mix with "B7", "B" or other coil codes.
  2. Verify motor full-load current and duty class fit within 9 A AC-3 rating at your supply voltage.
  3. Check you need 3 main NO power poles and 1 NO auxiliary; confirm if any NC contacts are required for interlocks.
  4. Ensure compatibility with existing TeSys K / LC1K overload relays and mechanical interlocks if used.
  5. Confirm mounting method (DIN rail vs panel) matches your panel design and available space.
  6. Check control voltage polarity and wiring scheme for DC coil and auxiliary contacts against the panel standard.

If any item on this checklist raises a question, contact the LeadTime.ca team before ordering — we can cross-check the coil code, verify overload relay coordination, and confirm stock on the correct variant for your application.

Frequently Asked Questions

Can I use the LP1K0910BD as a direct replacement for an existing TeSys K contactor with a different coil code?

Only if the coil voltage in the panel exactly matches 24 V DC. The LP1K0910BD has a BD-suffix 24 V DC coil — swapping it into a panel wired for 24 V AC, 110 V AC, or any other coil voltage will result in the contactor failing to pull in or coil damage. Always read the full catalog number from the nameplate of the unit being replaced and match the suffix character-for-character before ordering.

What motor size can the LP1K0910BD safely handle?

The LP1K0910BD is rated 9 A at AC-3 utilization category, which corresponds to approximately 4 kW at 400 V in direct-on-line motor starting. For motors above this current or power rating, a higher-rated TeSys K variant or the TeSys D family is required. Always verify the motor's full-load current from the nameplate against the 9 A AC-3 rating, including any service factor allowance.

Which overload relay coordinates with the LP1K0910BD for a complete motor starter?

The LP1K0910BD is designed to coordinate with TeSys K series overload relays in the LC1K / LR2K family. The specific overload relay selection depends on the motor's full-load current setting range — consult the Schneider Electric TeSys K coordination table to confirm the correct overload relay catalog number for your motor. The contactor does not provide built-in overload protection and requires an external protective device for a compliant motor starter assembly.

Is it acceptable to use the LP1K0910BD for a single-phase load instead of a three-phase motor?

The LP1K0910BD has three main poles rated for AC-3 three-phase motor applications. Using it for single-phase loads is possible in some configurations — for example, switching two poles in series for a single-phase circuit — but the specific application must be verified against Schneider Electric's guidance for utilization category and load type. Using the contactor outside the manufacturer's specified utilization categories could void approvals and create a safety risk.

How do I confirm from the part number alone whether the coil is AC or DC?

The last two characters of the LP1K0910 catalog number encode the coil voltage and type. "BD" designates a 24 V DC coil. "B7" designates a 24 V AC coil. Other suffixes represent other voltages and frequencies. The "D" in "BD" is the key indicator for direct current — cross-reference any suffix against the Schneider Electric TeSys K selection table before ordering, especially when reading from a worn nameplate on existing equipment.

Is the LP1K0910BD the same physical size as a TeSys D contactor with a similar current rating?

No. TeSys K and TeSys D contactors are different mechanical families with different footprints, terminal arrangements, and accessory ecosystems. They are not physically interchangeable, even at similar current ratings. If an existing installation uses TeSys D contactors, the replacement must also be TeSys D. Mixing families requires panel redesign and re-coordination of overload relays and accessories.

Why Order the LP1K0910BD Through LeadTime.ca

  • LeadTime.ca ships the LP1K0910BD worldwide — no regional restrictions on sourcing or delivery.
  • Our team can verify the coil suffix and auxiliary contact configuration against your schematic before the order is placed, reducing wrong-part risk on time-sensitive builds.
  • We can confirm real-time stock levels and lead time estimates before your build schedule is committed — no surprises at assembly.
  • Volume pricing is available for panel shops and OEM builders ordering multiple contactors or full TeSys K motor starter kits.
  • If the LP1K0910BD is constrained, we can propose vetted TeSys K equivalents or coordinate with Schneider Electric channels to source the correct part.

At-a-Glance Summary

  • Catalog number: LP1K0910BD — Schneider Electric TeSys K miniature IEC contactor.
  • 3-pole main contacts (3NO), rated 9 A AC-3 at up to 440 V — approximately 4 kW at 400 V in direct-on-line motor applications.
  • 24 V DC coil ("BD" suffix) — designed for PLC digital output control circuits.
  • 1 built-in NO auxiliary contact for status feedback, holding circuits, or interlock logic.
  • Approximate footprint: 45 × 58 × 57 mm — DIN rail or panel mount, screw clamp terminals.
  • IP2X terminal protection — TeSys K family-level rating.
  • Requires external overload relay (TeSys K / LC1K series) for a complete, code-compliant motor starter.
  • Most common ordering error: wrong coil suffix — always verify "BD" = 24 V DC before purchasing.
  • Not interchangeable with TeSys D contactors — different mechanical family, footprint, and accessory system.
  • Available with worldwide shipping through LeadTime.ca — contact for volume pricing and lead time confirmation.

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