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Motor protection circuit breakers - LOVATO ELECTRIC

Motor protection circuit breakers from LOVATO ELECTRIC are designed for the reliable protection of motors against overloads, short circuits, and phase failures. These devices, also known as manual motor starters or motor protective switches, combine thermal and magnetic tripping mechanisms to ensure precise and repeatable protection. Key technic...

Motor protection circuit breakers from LOVATO ELECTRIC are designed for the reliable protection of motors against overloads, short circuits, and phase failures. These devices, also known as manual motor starters or motor protective switches, combine thermal and magnetic tripping mechanisms to ensure precise and repeatable protection. Key technical parameters include rated operational currents from 0.1A up to 100A, breaking capacities up to 50kA at 400V (LCU), and a wide range of pole configurations (typically 3P). The SM1 series features standard short-circuit tripping indicators for immediate visual status. All units comply with IEC/EN 60947 and are suitable for isolation, making them a robust choice for demanding industrial environments.

These circuit breakers are primarily used in motor control centers (MCCs), distribution panels, and direct-on-line starter assemblies. They are essential in sectors such as manufacturing, water treatment, HVAC, and material handling, where protecting induction motors from electrical faults is critical. Their high breaking capacity often eliminates the need for upstream fuses, simplifying panel design and reducing installation costs. They are also ideal for integration into automated production lines and pump stations.

The main subcategories include the SM1 series (e.g., SM1-32, SM1-63, SM1-100) and the SM2 series. Article codes typically follow the pattern 'SM1-XXX' where 'XXX' denotes the rated current (e.g., SM1-32 for 32A). Other key items are the SM1-100 for higher current applications. These breakers are available with various accessories like auxiliary contacts, shunt trips, and undervoltage releases, but the core units themselves are the focus here.

Partnering with Electric Automation Network ensures you receive genuine LOVATO ELECTRIC products with real-time pricing and global express shipping. Our team of specialized engineers provides personalized technical support, helping you select the correct breaker for your motor's full-load current and starting characteristics. We also supply detailed technical documentation for every article, ensuring a seamless procurement experience.

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Manufacturer Code Reference Catalog Number Description Delivery Price

SM1Z1720R

SM1Z1720R

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FLUSH-MOUNT ENCLOSURE IP65 (4X) FOR SM1R... WITH ROTARY ACTUATOR BLACK. WIDTH 87MM

FLUSH MOUNT ENCLO. FOR SM1R BLACK HANDLE

Flush-mount enclosure IP65 (4X) for SM1R... with rotary actuator black. Width 87mm

3 View Availability View Price

SM1Z1725R

SM1Z1725R

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FLUSH-MOUNT ENCLOSURE IP65 (4X) FOR SM1R... WITH ROTARY ACTUATOR RED/YELLOW. WIDTH 87MM

FLUSH MOUNT ENCLO. FOR SM1R RED HANDLE

Flush-mount enclosure IP65 (4X) for SM1R... with rotary actuator red/yellow. Width 87mm

3 View Availability View Price

SM1X14400

SM1X14400

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UNDERVOLTAGE TRIP RELEASE. 400V 50HZ - 440V 60HZ

U.V.TRIP FOR SM1 400V 50/60HZ-460V 60HZ

Undervoltage trip release. 400V 50Hz - 440V 60Hz. For SM1…

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SM1R3200

SM1R3200

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MOTOR PROTECTION CIRCUIT BREAKER, IEC BREAKING CAPACITY ICU 50KA AT 400V, 24...32A

MOTOR PROT.CIRC.BR. SM1R 24-32A

Motor protection circuit breaker, IEC breaking capacity Icu 50kA at 400V, 24...32A

2 View Availability View Price

SM1X15400R

SM1X15400R

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UNDERVOLTAGE TRIP RELEASE. WITH EARLY-MAKE CONTACTS. 400VAC 50/60HZ

U.V.TRIP FOR SM1R 400V 50/60HZ C/W AUX

Undervoltage trip release with early-make contacts. 400VAC 50Hz for SM1R…

3 View Availability View Price

SM1P2500

SM1P2500

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MOTOR PROTECTION CIRCUIT BREAKER, IEC BREAKING CAPACITY ICU 15KA AT 400V, 20...25A

MOTOR PROT.CIRC.BR. SM1P 20-25A

Motor protection circuit breaker, IEC breaking capacity Icu 15kA at 400V, 20...25A

2 View Availability View Price

SM1P0100

SM1P0100

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MOTOR PROTECTION CIRCUIT BREAKER, IEC BREAKING CAPACITY ICU 100KA AT 400V, 0.63...1A

MOTOR PROT.CIRC.BR. SM1P 0,63-1A

Motor protection circuit breaker, IEC breaking capacity Icu 100kA at 400V, 0.63...1A

2 View Availability View Price

SM1RM1800

SM1RM1800

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MOTOR PROTECTION CIRCUIT BREAKER, IEC BREAKING CAPACITY ICU 100KA AT 400V, 18A

MOTOR PROT.CIRC.BR. SM1RM 18A

Motor protection circuit breaker, IEC breaking capacity Icu 100kA at 400V, 18A

3 View Availability View Price

SM1X1220

SM1X1220

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ADD-ON AUXILIARY CONTACT. SIDE MOUNT 2NO

SIDE MOUNT AUX.CONT. FOR SM1P/R 2NO

Add-on auxiliary contact. Side mount 2NO. For SM1…

2 View Availability View Price

SM1X14230

SM1X14230

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UNDERVOLTAGE TRIP RELEASE. 230V 50HZ

U.V.TRIP FOR SM1P/R 230V 50/60HZ

Undervoltage trip release. 230V 50Hz . For SM1…

2 View Availability View Price

SM1X15230R

SM1X15230R

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UNDERVOLTAGE TRIP RELEASE. WITH EARLY-MAKE CONTACTS. 230VAC 50/60HZ

U.V.TRIP FOR SM1R 230V 50/60HZ C/W AUX

Undervoltage trip release with early-make contacts. 230VAC 50Hz for SM1R…

3 View Availability View Price

SM1R2300

SM1R2300

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MOTOR PROTECTION CIRCUIT BREAKER, IEC BREAKING CAPACITY ICU 50KA AT 400V, 17...23A

MOTOR PROT.CIRC.BR. SM1R 17-23A

Motor protection circuit breaker, IEC breaking capacity Icu 50kA at 400V, 17...23A

2 View Availability View Price

SM1X17024R

SM1X17024R

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LED PILOT LIGHT 24VAC/DC RED

RED LED PILOT LIGHT 24V AC/DC

LED pilot light 24VAC/DC red. For SM1…

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SM1X17024G

SM1X17024G

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LED PILOT LIGHT 24VAC/DC GREEN

GREEN LED PILOT LIGHT 24V AC/DC

LED pilot light 24VAC/DC green. For SM1…

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SM1X3241R

SM1X3241R

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RIGID SM1 BREAKER-CONTACTOR CONNECTION. FOR MOTOR PROTECTION BREAKER SM1R... WITH BF26...38A CONTACTORS

RIGID CONNECTIONS SM1R WITH BF26-38A

Rigid SM1 breaker-contactor connection. For motor protection breaker SM1R... with BF26...38A contactors

2 View Availability View Price

SM1X3241P

SM1X3241P

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RIGID SM1 BREAKER-CONTACTOR CONNECTION. FOR MOTOR PROTECTION BREAKER SM1P... WITH BF26...38A CONTACTORS

RIGID CONNECTIONS SM1P WITH BF26-38A

Rigid SM1 breaker-contactor connection. For motor protection breaker SM1P... with BF26...38A contactors

2 View Availability View Price

SM1Z1711P

SM1Z1711P

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SURFACE MOUNT ENCLOSURE IP65 (4X) FOR SM1P... WIDTH 100MM

SURF.MOUNT ENCLOSURE FOR SM1P L=100mm

Surface mount enclosure IP65 (4X) for SM1P... width 100mm

2 View Availability View Price

SM1P2300

SM1P2300

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MOTOR PROTECTION CIRCUIT BREAKER, IEC BREAKING CAPACITY ICU 15KA AT 400V, 17...23A

MOTOR PROT.CIRC.BR. SM1P 17-23A

Motor protection circuit breaker, IEC breaking capacity Icu 15kA at 400V, 17...23A

2 View Availability View Price

SM1X1745P

SM1X1745P

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RUBBER MEMBRANA WITH RIM. IP65 (4X). FOR SM1...P ENCLOSURES

IP 65 MEMBRANE C/W RIM FOR SM1Z_P

Rubber membrane with rim. IP65 (4X). For SM1Z…P enclosures

3 View Availability View Price

SM1X8902

SM1X8902

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METAL BRACKETS FOR FIXING SM1... MOTOR PROTECTION WITH SCREWS

METAL BRAKETS FOR SCREW FIXING SM1

Metal brackets for fixing SM1... motor protection with screws

3 View Availability View Price

SM1R0025

SM1R0025

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MOTOR PROTECTION CIRCUIT BREAKER, IEC BREAKING CAPACITY ICU 100KA AT 400V, 0.16...0.25A

MOTOR PROT.CIRC.BR. SM1R 0,16-0,25A

Motor protection circuit breaker TYPE E, IEC breaking capacity Icu 100kA at 400V, 0.16...0.25A

2 View Availability View Price

SM1X17400G

SM1X17400G

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LED PILOT LIGHT 110...400VAC GREEN

GREEN LED PILOT LIGHT 230...400V AC

LED pilot light 110...400VAC green. For SM1…

3 View Availability View Price

SM1X17400R

SM1X17400R

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LED PILOT LIGHT 110...400VAC RED

RED LED PILOT LIGHT 230...400V AC

LED pilot light 110...400VAC red. For SM1…

3 View Availability View Price

SM1X16230

SM1X16230

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SHUNT TRIP RELEASE. 230VAC 50/60HZ

SHUNT TRIP FOR SM1P/R 230V 50/60HZ

Shunt trip release. 230VAC 50/60Hz. For SM1…

2 View Availability View Price

SM1Z1715R

SM1Z1715R

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SURFACE MOUNT ENCLOSURE IP65 (4X) FOR SM1R... WITH ROTARY ACTUATOR RED/YELLOW. WIDTH 100MM

SURF.MOUNT ENCL. FOR SM1R RED HANDLE

Surface mount enclosure IP65 (4X) for SM1R... with rotary actuator red/yellow. Width 100mm

2 View Availability View Price

SM1P0250

SM1P0250

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MOTOR PROTECTION CIRCUIT BREAKER, IEC BREAKING CAPACITY ICU 100KA AT 400V, 1.6...2.5A

MOTOR PROT.CIRC.BR. SM1P 1,6-2,5A

Motor protection circuit breaker, IEC breaking capacity Icu 100kA at 400V, 1.6...2.5A

2 View Availability View Price

SM1X1120

SM1X1120

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ADD-ON AUXILIARY CONTACT. FRONT MOUNT 2NO

FRONT MOUNT AUX.CONT. FOR SM1P/R 2NO

Add-on auxiliary contact. Front mount 2NO. For SM1…

2 View Availability View Price

SM1R4000

SM1R4000

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MOTOR PROTECTION CIRCUIT BREAKER, IEC BREAKING CAPACITY ICU 20KA AT 400V, 30...40A

MOTOR PROT.CIRC.BR. SM1R 30-40A

Motor protection circuit breaker, IEC breaking capacity Icu 20kA at 400V, 30...40A

2 View Availability View Price

SM1X3141R

SM1X3141R

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RIGID SM1 BREAKER-CONTACTOR CONNECTION. FOR MOTOR PROTECTION BREAKER SM1R... WITH BF09...25A CONTACTORS

RIGID CONNECTIONS SM1R WITH BF09-25A

Rigid SM1 breaker-contactor connection. For motor protection breaker SM1R... with BF09...25A contactors

2 View Availability View Price

SM1X3141P

SM1X3141P

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RIGID SM1 BREAKER-CONTACTOR CONNECTION. FOR MOTOR PROTECTION BREAKER SM1P... WITH BF09...25A CONTACTORS

RIGID CONNECTIONS SM1P WITH BF09-25A

Rigid SM1 breaker-contactor connection. For motor protection breaker SM1P... with BF09...25A contactors

2 View Availability View Price

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