Motor Protection Circuit Breakers SM1R


SM1R motor protection circuit breakers with
thermal and magnetic trip releases and high breaking
Motor control and protection of up to 22kW (400V) is
possible by choosing the suitable adjustment range, from
0.1 to 40A.
The dimensions of SM1R… motor protection circuit breakers are compliant with the
DIN43880 standard, allowing them to be mounted in all
modular enclosures on the market.
A magnetic trip indicator integrated on the SM1R…
breakers avoids dangerous closing operations during short circuit
conditions, previously disconnected by the breaker.

Their high breaking capacity permits the elimination of
protection fuses on the majority of installations.

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SM1R Rotating Type

    Order            CodeThermal Trip Range (A)Short Circuit Breaking Capacity Icu (kA)Short Circuit Breaking Capacity Ics (kA)
SM1R 00160.1…0.16100100
SM1R 00250.16…0.25100100
SM1R 00400.25…0.4100100
SM1R 00630.4…0.63100100
SM1R 01000.63…1100100
SM1R 01601…1.6100100
SM1R 02501.6…2.5100100
SM1R 04002.5…4100100
SM1R 06504…6.5100100
SM1R 10006.3…10100100
SM1R 14009…14100100
SM1R 180013…18100100
SM1R 230017…235025
SM1R 250020…255025
SM1R 320024…325025
SM1R 400030…402025

Operational characteristics
– IEC rated insulation voltage Ui: 690V
– IEC rated impulse withstand voltage: 6kV
– Rated frequency: 50/60Hz
– Rated maximum current: 40A
– Adjustment ranges: 16
– IEC breaking capacity: up to 100kA
– Heat dissipation per phase: 0.7…3.3W
– Magnetic tripping: 13In max.
– Tripping class: 10A
– Phase failure sensitive
– Mechanical endurance: 100,000 cycles
– Electrical endurance: 100,000 cycles
– Mounting on 35mm DIN rail (IEC/EN 60715)
– Mounting position: any
– IEC utilisation category: A
– Padlocking in OFF: Ø4mm/0.16”
– Protection rating: IP20.