The Ralli Wolf SPM 43 is a special purpose motor built for circuit breaker applications, running on a 240V supply. It combines a high no-load speed with a strong full-load power output, positioning it as one of the more powerful motors in the SPM range alongside the SPM 25.

Under no-load conditions, it draws 1.20A and 280W at a high 16,000 RPM. Under full load, current climbs to 4.5A and input power to 970W — the highest full-load power draw across the SPM range covered so far — while speed settles to 8,000 RPM. This combination of high speed and substantial power delivery suggests the SPM 43 is built for a demanding operating function within the circuit breaker mechanism, likely requiring both quick response and strong torque.

Its full-load rating of 5 minutes places it between the SPM 18 (10 minutes) and SPM 23/SPM 25 (1 minute each) in duty cycle length, suited to a moderate-duration, high-power operating action rather than either a fleeting trip function or long sustained running.

Key Features

• Runs on 240V AC/DC supply
• High no-load speed of 16,000 RPM
• Strong full-load power delivery: 970W at 4.5A
• Purpose-built for circuit breaker applications
• Rated for 5-minute full-load duty cycles
• Highest full-load power output in the SPM range

Technical Specification

Application

• Circuit breaker operating mechanisms requiring high power output
• High-torque spring charging or operating motors in switchgear
• Electrical panel and switchgear manufacturing
• Power distribution equipment requiring strong, moderate-duration motor bursts