Siemens 4.5 → 6.3 A SIRIUS Motor Protection Circuit Breaker, 690 V

Maximum rated current 100A (45kW @ 400V a.c.)
Rated operational voltage: 690V
Short-circuit proof to 50kA @ 400V a.c.
Maximum switching frequency; 15 operations/hour
Mechanical life; 10⁵ operations
Ambient temperature range; –20 to +60 ° C
Long term stability
Manual reset
Lockable in off position

UL, CSA

IEC947, VDE0990, EN60947

Stop electrical faults in their tracks with this Siemens motor protection circuit breaker. It shuts down overcurrents and short circuits before they reach sensitive hardware, clamping down on equipment damage. By adjusting its current setting between 4.5 and 6.3A, it's easy to line the unit up with the protection its connected appliance calls for. Resets are done in no time thanks to a handy front-mounted rocker switch. As the device handles up to 15 operations an hour, it's a suitable safeguard for intense motor-driven gear. Look for circuit breakers like this in industrial robotics and manufacturing systems.

• Conductor terminals located on top and bottom, for convenient wiring access
• Total power loss of just 7.25W for energy-efficient protection
• Current setting is controlled by front-mounted screw dials, so it's easy to adjust to suit equipment
• Snaps onto a DIN rail without tools, for quick installation

This breaker has a lifespan of 100,000 cycles, making it a reliable choice for long-lasting protection.