Lovato SM2R5000 - 35...50A - MOTOR PROTECTION CIRCUIT BREAKER - IEC BREAKING CAPACITY ICU 50KA AT 400V - Rotary Knob Type

General characteristics

SM2R... and SM3R... are modern circuit breakers with thermal and magnetic trip releases and high breaking capacity.

Motor control and protection, up to 45kW (400V) are possible by choosing the suitable adjustment range, up to 100A.

SM2R… and SM3R… breakers are Type E-certified according to UL508.

The SM2R… and SM3R… types are suitable for isolation according to IEC/EN 60947 standards and can be padlocked in OFF position without using accessories.

SM3… has a trip function which indicates thermal and magnetic tripping.

Their high breaking capacity consents to exclude protection fuses on the majority of the installations.

Operational characteristics

– IEC rated insulation voltage Ui: 1000V
– IEC rated impulse withstand voltage: 8kV
– IEC rated frequency: 50/60Hz
– Maximum rated current:
63A (for SM2...); 100A (for SM3...)
– Adjustment ranges: 2 (for SM2...); 3 (for SM3...)
– IEC breaking capacity: See table on page 1-2 and 1-3
– Max. heat dissipation per phase: 7W
– Magnetic tripping: 13In max.
– Tripping class: 10A
– Phase failure sensitive
– Mechanical life: 50,000 cycles
– Electrical life: 25,000 cycles
– Mounting on 35mm DIN rail (IEC/EN 60715)
– Mounting position: Any
– IEC utilisation category: A
– Padlocking in OFF: Ø4mm/0.16”
– IEC degree of protection: IP20 on front.

Certifications and compliance

Certifications obtained: cULus.

SM2… and SM3… circuit breakers are Type E-certified (Self-Protected Combination Motor Controllers) according to UL508; for Type E certification, SM3 only with accessory SM3X90 00R.

Compliant with standards: IEC/EN 60947-1, IEC/EN 60947-2, IEC/EN 60947-4-1, UL508, CSA C22.2 n° 14.