ER-Series Railway hydraulic magnetic circuit breaker


Under normal operating conditions, accidents may not appear to be a problem. However, normal operating conditions are not always guaranteed. Under strained or heavy use, a motor and/or another load-generating component within the equipment will draw additional current from the power source; when this happens, the equipment’s wires and/or components will overheat and may ultimately burn up.
In addition to protecting the equipment, the entire electrical system including the control switches, wires, and power source must be protected from faults. A circuit protection device should be employed at any point where a conductor size changes. Many electronic circuits and components like transformers have a lower overload withstand threshold level than conductors such as wires and cables. These components require circuit protection devices featuring very fast overload sensing and opening capabilities.


Designed for those applications requiring higher amperage and voltage handling capability in a compact design. The ER-Series circuit breaker has an unique arc shute design which results in high interrupting capacities. For increased mechanical strength and to achieve highest level/ rating on fire and smoke tests, a thermoset glass filled polyester halfshell construction is applied.


  • Ideally for higher amperage applications
  • Available with front and back mounting
  • Heavy duty box wire connector for solid wire and a pressure plate connector for stranded wire
  • Unique arc chute design which results in higher interrupting capacities
  • Thermoset glass filled polyester halfshell construction for increased mechanical strength, electrical strength and to achieve highest level/rating on fire and smoke tests
  • Wiping contacts – Mechanical linkage with two-step actuation – cleans contacts, provides high, positive contact pressure & longer contact life
  • Standard blue housing and white handle to improve visibility
  • 1-6 poles
  • 0.1 – 100 amps
  • Precise, temperature independant, operation
  • Wide choice of time delays

Railway Compliancy

All our circuit breakers are designed according:
  • IEC 60077 – 1/2/3/4
  • NF F62-001 – 1/2/3
  • NF F16-101/102
  • EN 45545-2
  • EN 50155
  • EN 61373
  • EN 50124-1
  • IEC 60068-2-30
  • IEC 60068-2-52
  • NF F61-010
  • MIL Method 107D, condition A
  • MIL-STD-202G, Method 204C



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