Description
Motor Protection Circuit Breaker
Hager MM509N Motor Protection Circuit Breaker
The Hager MM509N Motor Protection Circuit Breaker provides dependable protection for electric motors against overload and short-circuit conditions. Designed as a compact 3-pole device, it combines thermal motor protection and manual switching in a single DIN-rail mounted unit.
With an adjustable current range of 4–6.3A, the MM509N allows installers to precisely match protection settings to the rated current of the motor, ensuring reliable protection while avoiding unnecessary tripping during motor start-up.
Reliable Motor Protection
Motor protection circuit breakers are specifically designed for motor circuits where accurate overload protection and reliable switching are required. The MM509N integrates thermal protection with manual switching via a short rotary handle.
- Adjustable current range: 4 – 6.3 A
- 3-pole motor protection circuit breaker
- Thermal overload protection
- Manual motor switching with rotary handle
- DIN-rail mounting
Typical Applications
The Hager MM509N is suitable for protecting motors used in pumps, compressors, ventilation systems, industrial machinery and automation equipment where reliable motor protection is required.
Technical Specifications
- Motor rating: 1.1 / 2.2 kW at 230 / 415 V
- Adjustable current range: 4 – 6.3 A
- Number of poles: 3
- Rated impulse withstand voltage: 6 kV
- Protection class: IP20
- Connection type: Screw terminals
- Mounting: DIN rail
The compact design and adjustable protection settings make the MM509N an effective solution for motor protection in industrial and commercial electrical installations.
