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Motor protection switches

Motor protection switches, also known as motor circuit breakers or manual motor starters, are compact electromechanical devices designed to provide reliable protection for motors and transformers against overloads and short circuits. These devices combine a thermal overload relay and a magnetic short-circuit release in a single housing, offering...

Motor protection switches, also known as motor circuit breakers or manual motor starters, are compact electromechanical devices designed to provide reliable protection for motors and transformers against overloads and short circuits. These devices combine a thermal overload relay and a magnetic short-circuit release in a single housing, offering a coordinated protection solution. Key technical parameters include the rated operational current (e.g., from 0.11 A to 1.25 A for the S00 frame size), the magnetic release current (N-release), and the trip class (typically CLASS 10 for standard motor starting). They are available with different connection technologies such as screw terminals, spring terminals, or ring terminals, providing flexibility for various installation requirements. The compact size of these guardamotores allows for significant space savings in control panels. Many models also offer optional transverse auxiliary switches (e.g., 1 NO + 1 NC) for remote status indication.

These motor protection switches are primarily used in industrial and commercial applications for the connection and protection of three-phase motors and transformers. They are commonly installed in motor control centers (MCCs), distribution boards, and control panels. Typical sectors include manufacturing, HVAC, water treatment, and material handling. They are ideal for applications requiring a manual disconnect and automatic protection against overload and short-circuit conditions, such as conveyors, pumps, fans, and compressors. Their modular design allows for easy integration into existing systems.

The Siemens 3RV10 series motor protection switches comply with international standards such as IEC 60947-2 and IEC 60947-4-1. They are designed for compatibility with Siemens SIRIUS system components, including contactors and soft starters. The devices feature a standard switching capacity suitable for most industrial applications. The availability of various accessories, such as auxiliary switches, undervoltage releases, and shunt trips, enhances their functionality and integration into complex control schemes.

At Electric Automation Network, we offer a comprehensive range of Siemens motor protection switches with real-time pricing and detailed technical documentation for each article. Our team of specialized engineers provides personalized technical support to help you select the right device for your application. We ensure express worldwide shipping, so you receive your components quickly and reliably, minimizing downtime and keeping your operations running smoothly.

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Manufacturer Code Reference Catalog Number Description Delivery Price

3RV2041-4MA15

3RV2041-4MA15

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Circuit breaker size S3 for motor protection, CLASS 10 A-release 80...100 A N-release 1300 A screw terminal Standard switching capacity with transverse auxiliary switches 1 NO+1 NC

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3RV2041-4MA10

3RV2041-4MA10

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Circuit breaker size S3 for motor protection, CLASS 10 A-release 80...100 A N-release 1300 A screw terminal Standard switching capacity

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3RV2742-5HD10

3RV2742-5HD10

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Circuit breaker size S3 for system protection with approval circuit breaker UL 489, CSA C22.2 No.5-02 A-release 45 A N-release 585 A screw terminal

CIRCUIT-BREAKER, SIZE S3, FOR PLANT PROTECTION, WITH APPROVAL CIRCUIT-BREAKER UL 489, CSA C22.2 NO.5-02, A-TRIGGER 45 A, N-TRIGGER 585 A, SCREW CONNECTION,.

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3RV2742-5LD10

3RV2742-5LD10

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Circuit breaker size S3 for system protection with approval circuit breaker UL 489, CSA C22.2 No.5-02 A-release 60 A N-release 780 A screw terminal

CIRCUIT-BREAKER, SIZE S3, FOR PLANT PROTECTION, WITH APPROVAL CIRCUIT-BREAKER UL 489, CSA C22.2 NO.5-02, A-TRIGGER 60 A, N-TRIGGER 780 A, SCREW CONNECTION,.

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3RV2042-4HB10

3RV2042-4HB10

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Circuit breaker size S3 for motor protection, Class 20 A-release 36...50 A N-release 650 A screw terminal Increased switching capacity 100 kA

CIRCUIT-BREAKER SIZE S3, FOR MOTOR PROTECTION, CLASS 20, A-REL. 36...50A, N-REL. 650A, SCREW TERMINAL, INCREASED BREAKING CAP. 100KA.

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3RV2936-2BB00-0AA4

3RV2936-2BB00-0AA4

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SIRIUS Innovations TRIGGERED. Open the DOOR. FOR DOOR P/ SWITCH AUTOM. S2, HANDLE 8UC7 BLACK PLATE INDICATOR BLACK ENROLLMENT SPECIAL EMP. HAUNI

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3RV2042-4FB10

3RV2042-4FB10

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Circuit breaker size S3 for motor protection, Class 20 A-release 28...40 A N-release 520 A screw terminal Increased switching capacity 100 kA

CIRCUIT-BREAKER SIZE S3, FOR MOTOR PROTECTION, CLASS 20, A-REL. 28...40 A, N-RES. 520 A, SCREW TERMINAL, INCREASED BREAKING CAP. 100KA.

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3RV2042-4RA10

3RV2042-4RA10

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Circuit breaker size S3 for motor protection, CLASS 10 A-release 65...84 A N-release 1170 A screw terminal Increased switching capacity 100 kA

CIRCUIT-BREAKER SIZE S3, FOR MOTOR PROTECTION, CLASS 10, A-REL. 65...84A, N-REL. 1170A SCREW TERMINAL, INCREASED BREAKING CAP. 100KA.

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3RV2742-5QD10

3RV2742-5QD10

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Circuit breaker size S3 for system protection with approval circuit breaker UL 489, CSA C22.2 No.5-02 A-release 70 A N-release 910 A screw terminal

CIRCUIT-BREAKER, SIZE S3, FOR PLANT PROTECTION, WITH APPROVAL CIRCUIT-BREAKER UL 489, CSA C22.2 NO.5-02, A-TRIGGER 70 A, N-TRIGGER 910 A, SCREW CONNECTION,.

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3RV2041-4HA15

3RV2041-4HA15

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Circuit breaker size S3 for motor protection, CLASS 10 A-release 36...50 A N-release 650 A screw terminal Standard switching capacity with transverse auxiliary switches 1 NO+1 NC

CIRCUIT-BREAKER SIZE S3, FOR MOTOR PROTECTION, CLASS 10, A-REL. 36...50A, N-REL. 650A, SCREW TERMINAL, STANDARD SWITCHING CAPACITY 1 NO + 1 NC TRANSV. AUX.

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3RV2041-4HA10

3RV2041-4HA10

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Circuit breaker size S3 for motor protection, CLASS 10 A-release 36...50 A N-release 650 A screw terminal Standard switching capacity

CIRCUIT-BREAKER SIZE S3, FOR MOTOR PROTECTION, CLASS 10, A-REL. 36...50A, N-REL. 650A, SCREW TERMINAL, STANDARD SWITCHING CAPACITY

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3RV2031-4EA15-0BA0

3RV2031-4EA15-0BA0

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Special type Circuit breaker size S2 for motor protection, CLASS 10 A-release 22...32 A N-release 416 A screw terminal Standard switching capacity with transverse auxiliary switches 1 NO+1 NC Ambient temperature -50 °C 250 switching cycles

special type Automatic switch size S2 for motor protection, CLASS 10 Overload trigger with intensity delay 22...32 A Short circuit trigger 416 A screw terminal standard breaking power with transverse auxiliary contact block 1 NO+1 NC Ambient temperature -50 °C 250 operating cycles.

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3RV2021-4AA20-0BA0

3RV2021-4AA20-0BA0

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Special type Circuit breaker size S0 for motor protection, CLASS 10 A-release 10...16 A N-release 208 A Spring-type terminal Standard switching capacity Ambient temperature -50 °C 500 switching cycles

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3RV2341-4KC10

3RV2341-4KC10

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Circuit breaker size S3 for starter combination Rated current 75 A N-release 975 A screw terminal Standard switching capacity

CIRCUIT-BREAKER SIZE S3, FOR STARTER COMBINATION, RATED CURRENT 75A, N-REL. 975A, SCREW TERMINAL, STANDARD SWITCHING CAPACITY.

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3RV2946-2BB00-0AA4

3RV2946-2BB00-0AA4

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SIRIUS Innovations TRIGGERED. Open the DOOR. FOR DOOR P/ SWITCH AUTOM. S3, HANDLE 8UC7 BLACK, rating PLATE BLACK, INSCRIPTION SPECIAL EMP. HAUNI

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3RV2142-4YA10

3RV2142-4YA10

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Circuit breaker size S3 for motor protection CLASS 10 with overload relay function A-release 75...93 A N-release 1300 A screw terminal Increased switching capacity 100 kA

CIRCUIT-BREAKER SIZE S3, FOR MOTOR PROTECTION, CLASS 10, WITH OVERLOAD RELAY FUNCTION A-REL. 75...93A,N-REL. 1300A SCREW CONNECTION INCREASED BREAKING CAPACITY

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3RV2742-5FD10

3RV2742-5FD10

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Circuit breaker size S3 for system protection with approval circuit breaker UL 489, CSA C22.2 No.5-02 A-release 35 A N-release 455 A screw terminal

CIRCUIT-BREAKER, SIZE S3, FOR PLANT PROTECTION, WITH APPROVAL CIRCUIT-BREAKER UL 489, CSA C22.2 NO.5-02, A-TRIGGER 35 A, N-TRIGGER 455 A, SCREW CONNECTION,.

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3RV2342-4RC10

3RV2342-4RC10

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Circuit breaker size S3 for starter combination Rated current 84 A N-release 1170 A screw terminal Increased switching capacity 100 kA

CIRCUIT-BREAKER SIZE S3, FOR STARTER COMBINATION, RATED CURRENT 84A, N-REL.1170A SCREW TERMINAL, INCREASED BREAKING CAP. 100KA

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3RV2021-1KA20-0BA0

3RV2021-1KA20-0BA0

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Special type Circuit breaker size S0 for motor protection, CLASS 10 A-release 9...12 A N-release 163 A Spring-type terminal Standard switching capacity Ambient temperature -50 °C 500 switching cycles

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3RV2031-4JA10-0BA0

3RV2031-4JA10-0BA0

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Special type Circuit breaker size S2 for motor protection, CLASS 10 A-release 54...65 A N-release 845 A screw terminal Standard switching capacity Ambient temperature -50 °C 250 switching cycles

special type Automatic switch size S2 for motor protection, CLASS 10 Overload trigger with delay according to intensity 54...65 A Short circuit trigger 845 A screw terminal standard breaking power Ambient temperature -50 °C 250 switching cycles.

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3RV2742-5DD10

3RV2742-5DD10

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Circuit breaker size S3 for system protection with approval circuit breaker UL 489, CSA C22.2 No.5-02 A-release 25 A N-release 325 A screw terminal

CIRCUIT-BREAKER, SIZE S3, FOR PLANT PROTECTION, WITH APPROVAL CIRCUIT-BREAKER UL 489, CSA C22.2 NO.5-02, A-TRIGGER 25 A, N-TRIGGER 325 A, SCREW CONNECTION,.

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3RV2142-4HA10

3RV2142-4HA10

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Circuit breaker size S3 for motor protection CLASS 10 with overload relay function A-release 36...50 A N-release 650 A screw terminal Increased switching capacity 100 kA

CIRCUIT-BREAKER SIZE S3, FOR MOTOR PROTECTION, CLASS 10, WITH OVERLOAD RELAY FUNCTION A-REL. 36...50A, N-REL. 650A, SCREW CONNECTION, INCREASED BREAKING CAPACITY.

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3RV2042-4JA10

3RV2042-4JA10

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Circuit breaker size S3 for motor protection, CLASS 10 A-release 45...63 A N-release 819 A screw terminal Increased switching capacity 100 kA

CIRCUIT-BREAKER SIZE S3, FOR MOTOR PROTECTION, CLASS 10, A-REL. 45...63A, N-REL. 819A, SCREW TERMINAL, INCREASED BREAKING CAP. 100KA.

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3RV2041-4KA15

3RV2041-4KA15

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Circuit breaker size S3 for motor protection, CLASS 10 A-release 57...75 A N-release 975 A screw terminal Standard switching capacity with transverse auxiliary switches 1 NO+1 NC

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3RV2042-4FA10

3RV2042-4FA10

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Circuit breaker size S3 for motor protection, CLASS 10 A-release 28...40 A N-release 520 A screw terminal Increased switching capacity 100 kA

CIRCUIT-BREAKER SIZE S3, FOR MOTOR PROTECTION, CLASS 10, A-REL. 28...40 A, N-RES. 520 A, SCREW TERMINAL, INCREASED BREAKING CAP. 100KA.

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3RV2042-4YA10

3RV2042-4YA10

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Circuit breaker size S3 for motor protection, CLASS 10 A-release 75...93 A N-release 1300 A screw terminal Increased switching capacity 100 kA

CIRCUIT-BREAKER SIZE S3, FOR MOTOR PROTECTION, CLASS 10, A-REL. 75...93A,N-REL. 1300A SCREW TERMINAL, INCREASED BREAKING CAP. 100KA.

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3RV2342-4HC10

3RV2342-4HC10

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Circuit breaker size S3 for starter combination Rated current 50 A N-release 650 A screw terminal Increased switching capacity 100 kA

CIRCUIT-BREAKER SIZE S3, FOR STARTER COMBINATION, RATED CURRENT 50A, N-REL. 650A, SCREW TERMINAL, INCREASED BREAKING CAP. 100KA

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3RV2031-4TB15

3RV2031-4TB15

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Circuit breaker size S2 for motor protection class 20 A-release 12...17 A N-release 260 A screw terminal Standard switching capacity with transverse auxiliary switch 1 NO+1 NC

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3RV2341-4HC10

3RV2341-4HC10

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Circuit breaker size S3 for starter combination Rated current 50 A N-release 650 A screw terminal Standard switching capacity

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3RV2342-4YC10

3RV2342-4YC10

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Circuit breaker size S3 for starter combination Rated current 93 A N-release 1300 A screw terminal Increased switching capacity 100 kA

CIRCUIT-BREAKER SIZE S3, FOR STARTER COMBINATION, RATED CURRENT 93A, N-REL.1300A SCREW TERMINAL, INCREASED BREAKING CAP. 100KA.

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