Siemens 3RV2011-4AA10 — SIRIUS Motor Protector Specs & Price

By Abdullah Zahid
12 min read
Siemens 3RV2011-4AA10 SIRIUS size S00 motor protection circuit breaker for 3-phase industrial motor control panels

Siemens 3RV2011-4AA10 SIRIUS Motor Protection Circuit Breaker, Size S00, Class 10 — Complete Specs, Selection Guide & Where to Buy

Controls engineers and panel builders searching for the Siemens 3RV2011-4AA10 are typically at the final validation stage — motor FLA is known, the panel layout is roughed in, and the question is whether this specific SIRIUS size S00 device covers the 11–16A adjustable range, the 690V supply, and the Class 10 overload response the application demands. This review covers every purchase-critical specification drawn directly from Siemens documentation, flags the ordering mistakes that cause costly returns, and tells you honestly when a different variant is the right call.

If you have already confirmed this is the correct part, check current pricing and availability for the Siemens 3RV2011-4AA10 at LeadTime.ca — ships worldwide.

Who Should Buy the Siemens 3RV2011-4AA10 — and Who Should Not

This device is the right choice for engineers specifying a single-device motor protection solution for 3-phase AC motors whose full load amperage falls within the 11–16A adjustable range, on supplies up to 690V AC at 50/60 Hz.

  • Motor nameplate FLA is between 11A and 16A — the full adjustable range of this unit
  • Supply is 3-phase AC at 690V or below, 50 Hz or 60 Hz
  • Application requires Class 10 overload trip response (trip in 10 seconds or less at 1200% rated current)
  • Panel uses standard 35mm DIN rail and has at least 45mm of width clearance for the device
  • Motor duty is standard AC-3 or AC-3e induction; not DC or special-duty
  • Local manual start-stop via rotary handle is acceptable; remote automated control requires the optional 3RV2901 auxiliary contact module

If your motor FLA exceeds 16A, this model will nuisance-trip under normal load. Step up to the 3RV2021 series (17–32A range) or the 3RV2041 series for heavier duty. Single-phase or DC motor applications require a different device entirely.

On this page:

What the Siemens 3RV2011-4AA10 Actually Does in a Motor Control Panel

The Siemens 3RV2011-4AA10 is a SIRIUS motor protection circuit breaker, size S00, Class 10 — a 3-pole thermal-magnetic device that consolidates overload protection, short-circuit protection, and phase-failure detection into a single 45mm wide unit mounted directly on a standard 35mm DIN rail. At its core, it replaces three separate components: a thermal overload relay, a magnetic short-circuit protective device, and a phase-loss monitor. That consolidation directly reduces panel footprint, cuts internal wiring complexity, and shortens commissioning time.

The thermal element is a bimetallic strip that heats proportional to current. When sustained current exceeds the dial setpoint — adjustable across the 11–16A range — and holds that level long enough to satisfy the Class 10 time-current curve, the device trips. The magnetic element operates on a different principle: if short-circuit current reaches the nominal 208A trip threshold, an electromagnet actuates instantly, suppressing the arc and protecting motor windings within milliseconds. Phase-failure detection is built in with no external sensor required; losing any single phase during motor operation causes an immediate trip.

The rotary ON-OFF handle on the device face gives an operator local manual start-stop control. For applications where manual control at the panel is all that is needed — a pump room, an HVAC unit, a conveyor with local supervision — no external contactor is required. The device is rated for 100,000 mechanical operating cycles and 100,000 electrical switching cycles, which at the maximum recommended 15 starts per hour represents approximately 6,667 hours of full-rate operation before any wear-related maintenance consideration is warranted.

Typical System Architecture: Where the 3RV2011-4AA10 Sits in the Signal Chain

The 3RV2011-4AA10 sits immediately downstream of the main supply protection and upstream of the motor terminals, acting as the last line of defense for the motor circuit before current reaches the windings.

  • Upstream: Main supply isolation switch or upstream branch circuit breaker with gL/gG fuses coordinated per voltage — 80A at 240V, 63A at 400V, 50A at 500V, 40A at 690V
  • The 3RV2011-4AA10 mounts on 35mm DIN rail and receives 3-phase AC supply at its input terminals
  • The rotary handle provides local ON-OFF control; the thermal and magnetic elements monitor current continuously
  • Motor output terminals connect directly to the motor leads; no separate contactor is required for manual-only control
  • Optional 3RV2901 auxiliary contact module mounts to the front or side of the device and connects to a PLC input or remote signaling circuit for fault indication or automated shutdown sequencing

Industries and Applications Where This MPCB Is the Standard Choice

Centrifugal pump protection is one of the most common deployments for the 3RV2011-4AA10. On 380–690V 3-phase networks in water supply, wastewater treatment, and chemical processing, the built-in phase-loss detection addresses a real risk: single-phase operation from a blown fuse or supply fault will burn a submersible pump motor before a standard overload relay responds. The 3RV2011-4AA10 eliminates that gap without adding a separate 3-phase voltage monitor.

Fan and blower motors in HVAC and refrigeration units benefit from the combination of Class 10 overload response and local manual start-stop. Maintenance technicians can cycle the motor at the panel without navigating a separate control circuit, and the Class 10 trip curve — 10 seconds or less at 1200% rated current — handles the inrush of standard squirrel-cage induction motors without nuisance tripping during startup.

In packaging and conveyor applications where panel space is at a premium, the S00 size footprint of 45mm width is a meaningful advantage. Replacing a standalone contactor (typically 25–35mm) and a separate thermal relay (typically 18mm) with a single 45mm device reduces rail space and eliminates the interconnecting wiring between those components.

Small compressor motors in refrigeration units and laboratory or test equipment motors where controlled start-stop and overload shutdown are needed round out the typical deployment profile. The device is certified for safety-related switching OFF with a B10 value of 50,000 high-demand operations per ISO 13849-1, which means it can support emergency stop functions in safety-rated control architectures without requiring a separate safety relay for the switching-off action.

Application Typical Deployment
Centrifugal pump — water/wastewater/chemical Direct-on-line motor protection with phase-loss detection on 380–690V 3-phase supply
Fan/blower motor — HVAC or refrigeration Local manual start-stop with Class 10 overload and phase-failure protection
Belt conveyor — packaging or material handling Compact S00 single-device protection replacing relay and contactor in space-constrained panels
Small compressor — refrigeration unit Hermetic motor protection with phase-loss trip to prevent winding burnout
Laboratory or test mill motor Manual rotary control with optional 3RV2901 signaling for automated test sequence integration

Purchase-Critical Specifications at a Glance

Parameter Value
Poles 3 (3-phase AC)
Thermal Overload Current (Adjustable) 11–16 A
Magnetic Trip Current (Nominal) 208 A
Maximum Voltage (AC) 690 V
Frequency 50/60 Hz
Power Output — 400V AC-3 7.5 kW
Power Output — 690V AC-3 11 kW
Short-Circuit Breaking Capacity at 240V / 400V 100 kA / 65 kA
Protection Class Class 10 (trip ≤10 seconds at 1200% rated current)
Operating Temperature −20 to +60 °C

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

3RV2011-4AA10 vs. Larger SIRIUS Series: Which Current Range Do You Actually Need?

Model Series Current Range Typical Motor Power (400V) When to Choose
3RV2011-4AA10 11–16 A Up to 7.5 kW at 400V Motor FLA confirmed within 11–16A; standard 3-phase induction duty
3RV2021 series 17–32 A Larger motors above 7.5 kW Motor FLA exceeds 16A; step up to this series
3RV2041 series 32–45 A and above Heavy-duty industrial motors High-current or heavy-duty application requiring larger frame
SIRIUS 3RW soft starters Application dependent Large loads with inrush control requirement Ultra-smooth starting or reduced inrush current is a design requirement

If your motor FLA lands firmly in the 11–16A window and your supply is standard 3-phase AC at 690V or below, the 3RV2011-4AA10 is the correct choice — check current availability and pricing at LeadTime.ca.

Expert Verdict: Honest Assessment for Engineers and Procurement Teams

The Siemens 3RV2011-4AA10 earns its place in standard motor control panel design by doing exactly what it claims: delivering thermal overload, magnetic short-circuit protection, and phase-failure detection in a 45mm DIN rail package rated to 690V. The 100,000 mechanical cycle rating, the ISO 13849-1 B10 value of 50,000 operations for safety-related switching OFF, and the −20 to +60 °C operating range are not marketing claims — they are verified datasheet figures that translate directly to a device you can specify confidently in industrial environments including food processing, water treatment, and HVAC. The Class 10 trip curve is well-matched to standard squirrel-cage induction motors, and the built-in phase-loss detection removes a legitimate gap that purely thermal devices leave open.

The honest limits: the 3RV2011-4AA10 tops out at 16A, which means it covers motors up to roughly 7.5 kW at 400V AC-3 — anything larger requires the 3RV2021 or 3RV2041 series. There is no built-in auxiliary contact or remote control output; the base unit is manual-only, and adding the 3RV2901 module requires front or side access that not every panel layout accommodates. The device is also rated for a maximum of 15 starts per hour at AC-3 duty — applications with higher cycling rates need a different solution. If a VFD or soft-starter interface is in the design, a different product family is required entirely.

From a procurement standpoint, the 3RV2011-4AA10 is a widely stocked SIRIUS item available through authorized industrial distributors globally. Volume orders typically attract pricing adjustments, and bundling with the 3RV2901 auxiliary contact module is worth discussing before finalizing a bill of materials. If you are sourcing this for a time-critical build, confirm current lead time before placing the order — supply chain conditions can affect availability on standard industrial hardware. View current stock and pricing for the 3RV2011-4AA10 at LeadTime.ca.

For volume pricing or to confirm lead time before committing to a build, contact the LeadTime.ca team directly — we ship worldwide.

Wiring and Installation Overview

  • Snap the device onto a standard 35mm DIN rail per DIN EN 60715; the 3RV2011-4AA10 mounts in any orientation and requires a minimum 45mm width clearance on the rail
  • Connect 3-phase supply to the three input terminals and motor leads to the three output terminals using screw-type connections; wire gauge should be sized per the motor FLA and applicable electrical code
  • Set the thermal overload adjustment dial to match motor nameplate FLA within the 11–16A range — set slightly above FLA to avoid nuisance trips, not above the range maximum
  • If the optional 3RV2901 auxiliary contact module is required, verify front or side access is available in the panel layout before installation; mount per module instructions and connect signaling leads
  • Before energizing, confirm upstream fuses are coordinated per the voltage-specific gL/gG fuse table (80A at 240V, 63A at 400V, 50A at 500V, 40A at 690V) and verify main supply isolation is in place upstream

Engineers requiring full wiring diagrams or detailed commissioning procedures should refer to the Siemens SIRIUS 3RV2011 series product documentation available from support.industry.siemens.com.

Compatible Accessories and System Expansion

The 3RV2011-4AA10 base unit supports one key accessory for applications requiring remote signaling or pilot control beyond the manual rotary handle:

  • 3RV2901 Auxiliary Contact Module — Mounts to the front or side of the 3RV2011-4AA10; provides remote signaling outputs and pilot control capability for PLC input connections, fault indication circuits, or automated shutdown sequencing. This module does not replace an external contactor for fully automated motor control — it adds signaling and remote trip/indication only.

Wrong-Part Prevention: Confirm These Six Points Before You Order

The following checklist is drawn directly from Siemens specification guidance and common ordering errors. Verify every point against your application before placing the order:

  1. Confirm motor nameplate FLA falls within 11–16A adjustable range; if below 11A or above 16A, this model is incorrect
  2. Verify supply voltage does not exceed 690V AC; higher voltages require different SIRIUS series
  3. Check motor is standard induction (AC-3 or AC-3e duty); DC motors or special-duty loads require different device
  4. Confirm 3-phase supply; this unit is 3-pole and not suitable for single-phase
  5. Verify panel DIN rail is standard 35mm; non-standard rails require adapter or different mounting
  6. Check frequency is 50/60 Hz AC; different frequencies require verification with Siemens

If any of these points cannot be confirmed, contact the LeadTime.ca team before ordering — we can help verify the correct SIRIUS variant for your application and confirm availability worldwide.

Frequently Asked Questions

Does the Siemens 3RV2011-4AA10 replace a contactor for full motor control?

For manual local control only, the 3RV2011-4AA10 with its rotary ON-OFF handle is sufficient without a separate contactor. If remote or automated start-stop control is required, an external contactor must be specified downstream of the device. The optional 3RV2901 auxiliary contact module adds signaling and trip indication capability but does not provide contactor switching function.

What is the Class 10 trip time and why does it matter for motor selection?

Class 10 means the device will trip in 10 seconds or less when current reaches 1200% of the rated setpoint. This trip curve is specifically calibrated for standard squirrel-cage induction motors, which draw high inrush current during startup. Class 10 allows the motor to start without nuisance tripping while protecting against sustained overload. If your application requires Class 20 (slower trip for high-inertia loads), a different device is needed — the 3RV2011-4AA10 is Class 10 only.

Does the phase-failure detection work before the motor starts?

No. The built-in phase-failure detection on the 3RV2011-4AA10 detects phase loss during motor operation, not at startup. If pre-start phase monitoring is a design requirement, an additional upstream 3-phase voltage monitor or automatic lockout relay should be specified. During operation, the device trips immediately upon loss of any single phase.

What fuses should be used upstream of the 3RV2011-4AA10?

Siemens specifies gL/gG rated fuses for coordination: 80A at 240V, 63A at 400V, 50A at 500V, and 40A at 690V. These values are drawn directly from the device's fuse coordination reference table. Using incorrectly sized fuses can affect the device's rated short-circuit breaking capacity of 100 kA at 240V and 65 kA at 400V.

Can the 3RV2011-4AA10 be used in a safety-related emergency stop circuit?

Yes — the device is certified for safety-related switching OFF with a B10 value of 50,000 high-demand operations per ISO 13849-1. It is not suitable for safety-related switching ON. Maximum service life for safety-related applications is 10 years per safety standard SN 31920, with a failure rate of 50 FIT at low demand and 40% proportion of dangerous failures at low demand.

What is the maximum number of motor starts per hour this device supports?

The 3RV2011-4AA10 is rated for a maximum of 15 starts per hour under AC-3 and AC-3e duty conditions. Applications with higher cycling rates require a different device selection. For reference, the 100,000 mechanical and 100,000 electrical cycle ratings provide the endurance basis for this switching frequency over the device's service life.

Why Source the Siemens 3RV2011-4AA10 from LeadTime.ca

  • LeadTime.ca ships worldwide — procurement teams and engineers on any continent can place orders and receive the same sourcing support
  • Hard-to-find and short-lead-time SIRIUS components are a core focus; the team can confirm actual stock levels and lead time before you commit to a build schedule
  • Volume pricing is available for panel builders, OEMs, and integrators ordering multiple units or complete bills of materials including accessories like the 3RV2901 module
  • Direct contact with the sourcing team is available for urgent requirements or pre-order specification verification

At-a-Glance Summary

  • Model: Siemens 3RV2011-4AA10 — SIRIUS motor protection circuit breaker, size S00, Class 10
  • Thermal overload adjustment range: 11–16A; magnetic short-circuit trip at nominal 208A
  • Maximum supply voltage: 690V AC; 50/60 Hz; 3-pole for 3-phase AC induction motors only
  • Motor power ratings: 7.5 kW at 400V AC-3; 11 kW at 690V AC-3
  • Short-circuit breaking capacity: 100 kA at 240V; 65 kA at 400V
  • Device dimensions: 45mm wide × 97mm high × 97mm deep; mounts on standard 35mm DIN rail
  • Operating temperature range: −20 to +60 °C; storage −50 to +80 °C
  • Mechanical and electrical endurance: 100,000 cycles each
  • Built-in phase-failure detection; no auxiliary contact included — add 3RV2901 module for signaling
  • Certifications: UL listed, CSA certified, CE marked, ISO 13849-1 compliant (B10 = 50,000 operations for safety-related switching OFF)
  • Maximum switching frequency: 15 starts per hour at AC-3 duty
  • If motor FLA exceeds 16A, specify 3RV2021 (17–32A) or 3RV2041 series instead