lovato sm1r2500 sm1 rotary control motor circuit breaker 20 - 25 amp

Why Choose the SM1R2500?

Built for dependable motor protection, the Lovato SM1R2500 motor protection circuit breaker combines magnetic and thermal tripping to safeguard circuits from overloads and short-circuits. With a 20–25 A thermal adjustment range and a rated current of 25 A, this 3‑pole device delivers a high 50 kA Icu at 400 V, controlled via a robust rotary knob for precise setting and responsive operation.

Engineered to IEC/EN 60947 standards and recognised to UL508 and CSA C22.2 n° 14, the SM1R series offers 690 V Ui and 6 kV impulse withstand for demanding installations up to 3000 m. A 100,000-cycle mechanical life and 2.5–3 Nm terminal torque support durable, secure connections, while an operating range of −20 to +60 °C suits varied environments. Sustainability certification and the compact 390 g build simplify panel integration and ongoing service.

Key Benefits

• High 50 kA breaking capacity at 400 V for fault resilience
• Adjustable thermal trip 20–25 A to match motor load
• Combined magnetic and thermal protection in a single 3-pole unit
• Rotary knob control for fast setting and straightforward operation
• Rated insulation 690 V and 6 kV impulse withstand
• Long mechanical life of 100,000 cycles reduces downtime
• Operates from −20 to +60 °C; suitable up to 3000 m

Technical Specification

• Product type designation: SM1R
• Number of poles: 3
• Rated insulation voltage Ui (IEC/EN): 690 V
• Rated impulse withstand voltage Uimp: 6 kV
• Mechanical life: 100000 cycles
• Terminal tightening torque: 2.5 to 3 Nm
• Operating temperature: -20 to +60 °C
• Storage temperature: -50 to +80 °C
• Max altitude: 3000 m
• Weight: 390 g

What’s Included

• Lovato SM1R2500 motor protection circuit breaker
• Installation and safety instruction leaflet
• Manufacturer’s datasheet (digital, via download)

Applications

• Motor starters for pumps, fans and blowers
• Conveyor and material handling drives
• HVAC compressors and air handling units
• Machine tools and processing equipment
• General industrial control panels up to 25 A

Safety note: Installation should be performed by qualified personnel. Always isolate the supply, tighten terminals to 2.5–3 Nm, and follow IEC/EN, UL, CSA standards and the manufacturer’s instructions.