The Ralli Wolf SPM 68 is a special purpose motor built for circuit breaker applications, available in 90V or 100V DC configurations. It stands apart from most of the SPM range with a very low operating speed, pointing to a different mechanical role within the circuit breaker mechanism than the high-RPM motors like the SPM 18 or SPM 63.

Under no-load conditions, it draws 1.1A and 99W while running at just 194 RPM. Under full load, current can reach up to 3.0A (maximum) and input power rises to 270W, with speed settling to 184 RPM — a small drop from no-load to full-load speed, indicating the motor holds its speed well even as load increases.

Its 30-minute duty rating is the longest full-load rating in the SPM circuit breaker range alongside the SPM 24, suited to sustained, lower-speed operation rather than a brief high-force burst. Combined with its low RPM, this points to a motor built for a slower, more deliberate mechanical action within the breaker — such as a positioning or driving function rather than a rapid trip or spring-charge.

Key Features

• Available in 90V or 100V DC configurations
• Low, controlled operating speed: 184-194 RPM
• Extended 30-minute full-load duty rating
• Holds speed well under load
• Purpose-built for circuit breaker applications
• Maximum full-load current draw of 3.0A

Technical Specification

Application

• Circuit breaker operating mechanisms requiring sustained, low-speed operation
• DC switchgear and control panel equipment
• Substation and battery-backed circuit breaker systems
• Power distribution equipment requiring controlled positioning or drive functions