Technical specifications, features, applications and purchasing information.
| Brand | Allen-Bradley |
| Model Number | 140M-C2E-C20 |
| Product Category | Motor Protection Circuit Breaker |
| Product Family | 140M IEC Circuit Breakers |
| Product Bulletin | Bulletin 140M |
| Device Type | Manual Motor Protection Circuit Breaker |
| Protection Technology | Thermal-Magnetic |
| Number of Poles | 3 |
| Rated Operational Current (Ie) | 20 A per IEC |
| Adjustable Thermal Overload Setting Range | 14.5-20 A |
| Overload Trip Class | Class 10 |
| Magnetic Short-Circuit Release | Fixed, 260 A |
| Magnetic Release Characteristic | Approximately 13 Times Maximum Rated Current; Manufacturer Tolerance Applies |
| Phase Failure Sensitivity | Yes |
| Phase Loss Protection | Differential Release |
| Maximum Rated Operating Voltage | 690 VAC per IEC |
| Rated Frequency | 50/60 Hz |
| Rated Impulse Withstand Voltage | 6 kV |
| Overvoltage Category | III |
| Ultimate Short-Circuit Breaking Capacity (Icu) at 230/240VAC | 65 kA per IEC |
| Ultimate Short-Circuit Breaking Capacity (Icu) at 400VAC | 50 kA per IEC |
| Service Short-Circuit Breaking Capacity (Ics) at 500VAC | 6 kA per IEC |
| Maximum Type 2 Coordination Short-Circuit Current at 400VAC | 50 kA with Applicable Contactor and Coordination Conditions |
| Self-Protected Combination Motor Controller SCCR | 10 kA at 480Y/277 V in the Specified UL 508 Type E Configuration |
| Group Motor Installation Short-Circuit Rating | 30 kA at 600 V under Specified UL 508 Installation Conditions |
| Standard Three-Phase Motor Rating at 230/240VAC | 5.5 kW per IEC AC-3 |
| Standard Three-Phase Motor Rating at 400VAC | 10 kW per IEC AC-3 |
| Standard Three-Phase Motor Rating at 690VAC | 17 kW per IEC AC-3 |
| Maximum Three-Phase Motor Horsepower at 230VAC | 7.5 HP |
| Frame Size | C Frame, 32 A |
| Operating Mechanism | Rotary Control Knob |
| Main Circuit Connections | Screw Terminals |
| Integrated Auxiliary Contacts | None |
| Integrated Undervoltage Release | None |
| Electrical Endurance | 100,000 Operations at Maximum Rated Operational Current |
| Maximum Switching Frequency | 25 Operations per Hour |
| Total Power Loss at Rated Load | 6 W |
| Enclosure Protection Rating | IP2X |
| Pollution Degree | 3 |
| Maximum Installation Altitude | 2000 m |
| Temperature Compensation | Compensated from -20°C |
| Current Derating at 60°C | No Current Reduction Under Specified Manufacturer Conditions |
| Dimensions (W × H × D) | 45 × 90 × 74.5 mm |
| Product Lifecycle Status | Discontinued |
| Discontinuation Date | February 18, 2022 |
| Manufacturer Replacement Category | Engineering Replacement |
| Manufacturer-Listed Replacement | 140MT-C3E-C20 |
| Manufacturer Documentation | 140M-TD002 Motor Protection Circuit Breaker and Motor Circuit Protector Specifications |
| Manufacturer Product Reference | Rockwell Automation 140M-C2E-C20 Product Specifications |
| Technical Data Reference | Rockwell Automation 140M-TD002 Technical Data |
The Allen-Bradley 140M-C2E-C20 provides adjustable thermal overload protection across a 14.5-20 A setting range. Its Class 10 trip characteristic is designed for compatible three-phase motors requiring appropriately coordinated overload protection.
Three-pole construction combines adjustable thermal overload protection with a fixed 260 A magnetic short-circuit release. The device also incorporates differential phase-loss protection to respond to specified motor supply imbalance conditions.
The circuit breaker has an IEC ultimate breaking capacity of 50 kA at 400 VAC and 65 kA at 230/240 VAC. Actual permissible fault current depends on the operating voltage, applicable standard, coordination method and protective equipment configuration.
The 140M-C2E-C20 is rated for maximum operating voltage of 690 VAC per IEC at 50/60 Hz. Manufacturer motor selection data lists 10 kW at 400 VAC for standard three-phase AC-3 motor switching.
A rotary control knob provides manual switching and reset operation. The device uses screw-type main circuit terminals and does not include factory-installed auxiliary contacts or an undervoltage release in the standard configuration.
The C-frame breaker measures 45 × 90 × 74.5 mm and features IP2X construction. It is suited to compatible motor control assemblies where the overload range, short-circuit ratings and associated contactor arrangement have been verified.
We support online purchase of the Allen-Bradley 140M-C2E-C20 Motor Protection Circuit Breaker. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
What is Allen-Bradley 140M-C2E-C20?
Allen-Bradley 140M-C2E-C20 is a three-pole Bulletin 140M motor protection circuit breaker with an adjustable 14.5-20 A thermal overload range, fixed magnetic short-circuit protection and Class 10 overload trip characteristics.
What is the adjustable current range of 140M-C2E-C20?
The thermal overload release can be adjusted between 14.5 A and 20 A. The setting should be selected according to the connected motor nameplate current and the applicable manufacturer coordination requirements.
How many poles does 140M-C2E-C20 have?
The circuit breaker has three poles, allowing it to protect compatible three-phase motor circuits through a single motor protection device.
What is the magnetic trip current?
The magnetic short-circuit release is fixed at 260 A, approximately 13 times the maximum 20 A rated operational current. The manufacturer's tolerance and applicable coordination conditions must be considered.
What is the maximum operating voltage?
The manufacturer specifies a maximum rated operating voltage of 690 VAC per IEC, with a rated frequency of 50/60 Hz. The permissible breaking capacity differs with the applied voltage.
What is the short-circuit breaking capacity at 400VAC?
The IEC ultimate short-circuit breaking capacity, Icu, is 50 kA at 400 VAC. This must not be confused with the service breaking capacity or a UL short-circuit current rating, which may have different values and conditions.
Does 140M-C2E-C20 provide motor overload and phase-loss protection?
Yes. The device incorporates adjustable thermal overload protection with Class 10 trip characteristics and differential phase-loss protection. Correct application requires verification of the motor and installation conditions.
What motor power can 140M-C2E-C20 protect?
Manufacturer AC-3 selection data identifies standard three-phase motor ratings of 5.5 kW at 230/240 VAC, 10 kW at 400 VAC and 17 kW at 690 VAC. These are application selection ratings rather than a substitute for checking the motor full-load current.
Does 140M-C2E-C20 include auxiliary contacts?
No. The standard breaker configuration does not have integrated auxiliary contacts or an undervoltage release. Any additional indication or tripping accessories must be selected separately according to the compatible product documentation.
What is the difference between 140M-C2E-C20 and 140M-C2E-C16?
The 140M-C2E-C20 has a 14.5-20 A adjustable overload range and 260 A fixed magnetic release. The 140M-C2E-C16 has a 10-16 A adjustable range and a different magnetic trip rating. They are not interchangeable without verifying the connected motor protection requirements.
Is Allen-Bradley 140M-C2E-C20 discontinued?
Yes. Rockwell Automation lists the 140M-C2E-C20 as discontinued effective February 18, 2022. The manufacturer identifies 140MT-C3E-C20 as an engineering replacement, meaning dimensions, wiring, accessories and protection coordination should be assessed before migration.
What should be checked before ordering 140M-C2E-C20?
Verify the exact catalog number 140M-C2E-C20, three-pole construction, 14.5-20 A overload adjustment range, Class 10 trip characteristics, 260 A magnetic release, motor nameplate current, supply voltage, prospective short-circuit current, applicable IEC or UL ratings, existing contactor and accessory compatibility, screw-terminal connections, 45 × 90 × 74.5 mm dimensions and discontinued product status before selecting the device for a motor control application.
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| Brand | Allen-Bradley |
| Model Number | 140M-C2E-C20 |
| Product Category | Motor Protection Circuit Breaker |
| Product Family | 140M IEC Circuit Breakers |
| Product Bulletin | Bulletin 140M |
| Device Type | Manual Motor Protection Circuit Breaker |
| Protection Technology | Thermal-Magnetic |
| Number of Poles | 3 |
| Rated Operational Current (Ie) | 20 A per IEC |
| Adjustable Thermal Overload Setting Range | 14.5-20 A |
| Overload Trip Class | Class 10 |
| Magnetic Short-Circuit Release | Fixed, 260 A |
| Magnetic Release Characteristic | Approximately 13 Times Maximum Rated Current; Manufacturer Tolerance Applies |
| Phase Failure Sensitivity | Yes |
| Phase Loss Protection | Differential Release |
| Maximum Rated Operating Voltage | 690 VAC per IEC |
| Rated Frequency | 50/60 Hz |
| Rated Impulse Withstand Voltage | 6 kV |
| Overvoltage Category | III |
| Ultimate Short-Circuit Breaking Capacity (Icu) at 230/240VAC | 65 kA per IEC |
| Ultimate Short-Circuit Breaking Capacity (Icu) at 400VAC | 50 kA per IEC |
| Service Short-Circuit Breaking Capacity (Ics) at 500VAC | 6 kA per IEC |
| Maximum Type 2 Coordination Short-Circuit Current at 400VAC | 50 kA with Applicable Contactor and Coordination Conditions |
| Self-Protected Combination Motor Controller SCCR | 10 kA at 480Y/277 V in the Specified UL 508 Type E Configuration |
| Group Motor Installation Short-Circuit Rating | 30 kA at 600 V under Specified UL 508 Installation Conditions |
| Standard Three-Phase Motor Rating at 230/240VAC | 5.5 kW per IEC AC-3 |
| Standard Three-Phase Motor Rating at 400VAC | 10 kW per IEC AC-3 |
| Standard Three-Phase Motor Rating at 690VAC | 17 kW per IEC AC-3 |
| Maximum Three-Phase Motor Horsepower at 230VAC | 7.5 HP |
| Frame Size | C Frame, 32 A |
| Operating Mechanism | Rotary Control Knob |
| Main Circuit Connections | Screw Terminals |
| Integrated Auxiliary Contacts | None |
| Integrated Undervoltage Release | None |
| Electrical Endurance | 100,000 Operations at Maximum Rated Operational Current |
| Maximum Switching Frequency | 25 Operations per Hour |
| Total Power Loss at Rated Load | 6 W |
| Enclosure Protection Rating | IP2X |
| Pollution Degree | 3 |
| Maximum Installation Altitude | 2000 m |
| Temperature Compensation | Compensated from -20°C |
| Current Derating at 60°C | No Current Reduction Under Specified Manufacturer Conditions |
| Dimensions (W × H × D) | 45 × 90 × 74.5 mm |
| Product Lifecycle Status | Discontinued |
| Discontinuation Date | February 18, 2022 |
| Manufacturer Replacement Category | Engineering Replacement |
| Manufacturer-Listed Replacement | 140MT-C3E-C20 |
| Manufacturer Documentation | 140M-TD002 Motor Protection Circuit Breaker and Motor Circuit Protector Specifications |
| Manufacturer Product Reference | Rockwell Automation 140M-C2E-C20 Product Specifications |
| Technical Data Reference | Rockwell Automation 140M-TD002 Technical Data |
The Allen-Bradley 140M-C2E-C20 provides adjustable thermal overload protection across a 14.5-20 A setting range. Its Class 10 trip characteristic is designed for compatible three-phase motors requiring appropriately coordinated overload protection.
Three-pole construction combines adjustable thermal overload protection with a fixed 260 A magnetic short-circuit release. The device also incorporates differential phase-loss protection to respond to specified motor supply imbalance conditions.
The circuit breaker has an IEC ultimate breaking capacity of 50 kA at 400 VAC and 65 kA at 230/240 VAC. Actual permissible fault current depends on the operating voltage, applicable standard, coordination method and protective equipment configuration.
The 140M-C2E-C20 is rated for maximum operating voltage of 690 VAC per IEC at 50/60 Hz. Manufacturer motor selection data lists 10 kW at 400 VAC for standard three-phase AC-3 motor switching.
A rotary control knob provides manual switching and reset operation. The device uses screw-type main circuit terminals and does not include factory-installed auxiliary contacts or an undervoltage release in the standard configuration.
The C-frame breaker measures 45 × 90 × 74.5 mm and features IP2X construction. It is suited to compatible motor control assemblies where the overload range, short-circuit ratings and associated contactor arrangement have been verified.
We support online purchase of the Allen-Bradley 140M-C2E-C20 Motor Protection Circuit Breaker. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
What is Allen-Bradley 140M-C2E-C20?
Allen-Bradley 140M-C2E-C20 is a three-pole Bulletin 140M motor protection circuit breaker with an adjustable 14.5-20 A thermal overload range, fixed magnetic short-circuit protection and Class 10 overload trip characteristics.
What is the adjustable current range of 140M-C2E-C20?
The thermal overload release can be adjusted between 14.5 A and 20 A. The setting should be selected according to the connected motor nameplate current and the applicable manufacturer coordination requirements.
How many poles does 140M-C2E-C20 have?
The circuit breaker has three poles, allowing it to protect compatible three-phase motor circuits through a single motor protection device.
What is the magnetic trip current?
The magnetic short-circuit release is fixed at 260 A, approximately 13 times the maximum 20 A rated operational current. The manufacturer's tolerance and applicable coordination conditions must be considered.
What is the maximum operating voltage?
The manufacturer specifies a maximum rated operating voltage of 690 VAC per IEC, with a rated frequency of 50/60 Hz. The permissible breaking capacity differs with the applied voltage.
What is the short-circuit breaking capacity at 400VAC?
The IEC ultimate short-circuit breaking capacity, Icu, is 50 kA at 400 VAC. This must not be confused with the service breaking capacity or a UL short-circuit current rating, which may have different values and conditions.
Does 140M-C2E-C20 provide motor overload and phase-loss protection?
Yes. The device incorporates adjustable thermal overload protection with Class 10 trip characteristics and differential phase-loss protection. Correct application requires verification of the motor and installation conditions.
What motor power can 140M-C2E-C20 protect?
Manufacturer AC-3 selection data identifies standard three-phase motor ratings of 5.5 kW at 230/240 VAC, 10 kW at 400 VAC and 17 kW at 690 VAC. These are application selection ratings rather than a substitute for checking the motor full-load current.
Does 140M-C2E-C20 include auxiliary contacts?
No. The standard breaker configuration does not have integrated auxiliary contacts or an undervoltage release. Any additional indication or tripping accessories must be selected separately according to the compatible product documentation.
What is the difference between 140M-C2E-C20 and 140M-C2E-C16?
The 140M-C2E-C20 has a 14.5-20 A adjustable overload range and 260 A fixed magnetic release. The 140M-C2E-C16 has a 10-16 A adjustable range and a different magnetic trip rating. They are not interchangeable without verifying the connected motor protection requirements.
Is Allen-Bradley 140M-C2E-C20 discontinued?
Yes. Rockwell Automation lists the 140M-C2E-C20 as discontinued effective February 18, 2022. The manufacturer identifies 140MT-C3E-C20 as an engineering replacement, meaning dimensions, wiring, accessories and protection coordination should be assessed before migration.
What should be checked before ordering 140M-C2E-C20?
Verify the exact catalog number 140M-C2E-C20, three-pole construction, 14.5-20 A overload adjustment range, Class 10 trip characteristics, 260 A magnetic release, motor nameplate current, supply voltage, prospective short-circuit current, applicable IEC or UL ratings, existing contactor and accessory compatibility, screw-terminal connections, 45 × 90 × 74.5 mm dimensions and discontinued product status before selecting the device for a motor control application.
