lovato sm1r2300 sm1 rotary control motor circuit breaker 17 - 23 amp

Why Choose the SM1R2300?

Lovato’s SM1R2300 motor protection circuit breaker delivers dependable motor safeguarding in a compact, rotary‑operated form. With the adjustable 17–23 A thermal trip range and magnetic and thermal protection, it precisely protects motors while simplifying setup via the front rotary knob. A 3‑pole design and a high IEC breaking capacity of 50 kA Icu at 400 V AC make SKU SM1R2300 a robust choice for three‑phase applications.

Engineered for demanding environments, the SM1R2300 offers Ui 690 V and Uimp 6 kV, operates from −20 to +60 °C up to 3000 m, and achieves 100,000 mechanical cycles. Built to IEC/EN 60947-1, -2 and -4-1, plus UL508 and CSA C22.2 n° 14, it ensures broad conformity. Terminal screws tighten to 2.5–3 Nm, and the 390 g SM1R device streamlines motor protection in control panels.

Key Benefits

• Wide 17–23 A thermal adjustment for accurate motor protection.
• High 50 kA Icu at 400 V AC for robust short-circuit performance.
• Magnetic and thermal trip mechanisms safeguard against overloads and faults.
• Simple rotary knob control for quick setup and reset.
• 3-pole design suited to three-phase motor circuits.
• Rated insulation 690 V and 6 kV impulse withstand.
• Reliable operation from -20 to +60 °C, up to 3000 m.
• Long 100,000-cycle mechanical life for durable service.

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 SM1R2300 motor protection circuit breaker
• Installation instructions

Applications

• Three-phase motor starters and control panels
• Pumps, fans, and industrial HVAC drives
• Conveyors and material handling systems
• Compressors and general machine tools

Safety note: Installation and setting must be performed by qualified personnel. Isolate power before work, tighten terminals to 2.5–3 Nm, and set the thermal range within 17–23 A to suit the motor per applicable IEC/EN 60947 guidelines.