ALLEN BRADLEY 140M-C2E-C25 Product Description

Overview

ALLEN BRADLEY 140M-C2E-C25 is a Bulletin 140M motor protection circuit breaker in frame size C. Rockwell Automation classifies the product as a motor protection circuit-breaker with standard breaking capacity, three-pole construction, adjustable thermal overload release and fixed magnetic trip. The Rockwell record shows the unit lifecycle as discontinued from February 25, 2022, with engineering replacement 140MT-C3E-C25 identified by Rockwell.

Features

The 140M-C2E-C25 current setting range is 18 to 25 A, with IEC rated operational current 25 A. Magnetic release current is fixed at 13 to 14 times Ie maximum, with tolerance ±20 percent. The overload release setting listed in the Rockwell record starts at 18 A within the 18 to 25 A range. Rated operating power at AC-3, 400 V is 11 kW, and maximum horsepower rating is 7.5 hp at 230 V, three-phase.

The breaker has 3 poles, screw-connection terminals, standard breaking capacity and no factory circuit-breaker auxiliary or trip contacts according to the Rockwell product record. Protection type is adjustable thermal with fixed magnetic trip at 13 × In. Phase loss protection uses a differential release. Rated frequency is 50 / 60 Hz, and maximum rated operating voltage is 690 V per IEC, SEV, VDE 0660.

Rockwell dimensions list width 45 mm, height 90 mm and depth 74.5 mm. Protection degree is IP2X. Ambient operating temperature listed is -25 °C, ambient storage temperature -40 °C, temperature compensation -20 °C, pollution degree 3, and site altitude to 2000 m. Shock resistance for transport per 60068-2-27 is 30 G, 11 ms, all axes. Mechanical life is listed as 100,000 operations.

Specs

Brand: ALLEN BRADLEY / Rockwell Automation Bulletin: 140MModel: 140M-C2E-C25Product type: Motor protection circuit breaker Frame size: Frame C, 32 A frame Poles: 3Current setting range: 18 to 25 ARated operational current Ie per IEC: 25 AMagnetic trip: Fixed, 13 to 14 × Ie maximum, ±20 percentOverload release setting: 18 A listed within range Protection: Adjustable thermal overload, fixed magnetic short-circuit trip Phase loss protection: Differential release Rated AC-3 power at 400 V: 11 kWMaximum horsepower: 7.5 hp at 230 V, three-phase Rated operating voltage maximum: 690 V per IEC, SEV, VDE 0660 Rated frequency: 50 / 60 HzRated service short-circuit breaking capacity Ics: 6 kA at 500 V per IEC Ultimate short-circuit breaking capacity Icu: 65 kA at 230 / 240 V per IEC Group installation short-circuit current: 25 kA at 480 V, UL 508 manual motor controller Disconnect with 100-C contactor short-circuit current: 30 kA at 600 V maximum-inv per Rockwell Disconnect-only short-circuit current: 5 kA at 600 V per Rockwell Terminal type: Screw connection Auxiliary or trip contacts: None factory option per record Protection degree: IP2XWidth: 45 mmHeight: 90 mmDepth: 74.5 mmAmbient operating temperature: -25 °C per Rockwell record Ambient storage temperature: -40 °CTemperature compensation: -20 °CPollution degree: 3Site altitude: To 2000 mShock resistance: 30 G, 11 ms, all axes per transport standard Mechanical life: 100,000 operationsContactor coordination reference: 100-C30 at 600 V for Type 2 coordination minimum-inv Country of origin: Switzerland Lifecycle: Discontinued February 25, 2022Rockwell replacement: 140MT-C3E-C25Product status: Legacy motor starter protection spare; replacement coordination must be verified

Principle

A motor protection circuit breaker combines thermal overload protection and magnetic short-circuit protection in one three-pole motor disconnect. The thermal release responds to sustained overload current and trips to protect the motor winding; the magnetic release responds rapidly to high short-circuit current. The breaker also provides local motor isolation for maintenance. Thermal and magnetic settings, contactor coordination, starter phase arrangement and interrupting rating must match the motor branch circuit.

Replacement should verify the motor full-load current, setting range, pole count, supply voltage, frequency, HP or kW rating, short-circuit available current, contactor model and Type 1 or Type 2 coordination, auxiliary contact requirement, terminal type, panel cutout and DIN rail or mounting arrangement. Because the original 140M is discontinued, compare the Rockwell replacement 140MT-C3E-C25 dimensions, terminals, accessories, trip settings and certification before installing. Motor protection devices should be serviced only after proper isolation, lockout and verification that stored or residual voltage is absent.

Applications

ALLEN BRADLEY 140M-C2E-C25 is used in existing three-phase motor starters for pumps, fans, compressors, conveyors, hoists, machine tools, packaging machines, mixers, extruders, material handling, process skids and general industrial motor control panels. In legacy Allen-Bradley starter assemblies, it serves as a direct replacement motor protection breaker spare when the current range, voltage, poles, contactor coordination, terminals and mounting match the original 140M unit.