Miniature circuit breakers
Miniature circuit breakers
Mors Smitt offers a wide range of railway hydraulic magnetic circuit breakers. The circuit
breakers are fully configurable to meet the individual requirements.
breakers are fully configurable to meet the individual requirements.
Advantages
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Precise, temperature stable mechanism, due to hydraulic magnetic technology
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Overcurrent sensing mechanism reacts only to changes of current
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No ‘warm-up’ period to slow down its response to overload. No ‘cooldown’ period after overload before it can be reset. Derating considerations due to temperature variations are not normally required and heat-induced nuisance tripping is avoided
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A common trip linkage between all poles, another safety feature, ensures that an overload in one pole will trip all adjacent poles
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A trip-free mechanism, a safety feature, makes it impossible to manually hold the contacts closed during overcurrent or fault conditions
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Standard dimensions, mounting and current ratings provide maximum application
versatility -
Wide range: current ratings to 700 Amps and rated voltages to 600 VAC and 110 VDC are available
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Options: series trip, mid-trip, switch only (with or without auxiliary switch), remote
shutdown, shunt trip, and dual coil circuit options are available
Standards
The Mors Smitt minature circuit breakers are designed according the following railway
standards:
standards:
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IEC 60077 Electrical equipment for rolling stock in railway applications
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EN 50155 Electronic equipment used on rolling stock for railway applications
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EN 45545-2 Fire protection on railway vehicles
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NF F16-101/-102 Fire behavior - Railway rolling stock
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IEC 61373 Shock & vibration resistance - Railway rolling stock
The Mors Smitt miniature circuit breaker portfolio:
Accessories for circuit breakers
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AR-Series Railway hydraulic magnetic circuit break…
- Compact design.
- Unique arc shute method which results in higher interrupting capacities.
- Thermoset glass filles polyester halfshell construction for increased mechanical strength, electrical strength and to achieve highest level/rating on fire and smoke tests.
- Standard blue housing and white handle to improve visibility.
- Up to 6 poles configurations.
- 0.1 -50 amps up to 277 Vac or 90Vdc
- Precise, temperature independent, operation.
- Wide choice of time delays, terminal options and actuator colors.
- The breakers can also be equipped with an optional mid-trip handle style actuator.
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CR-Series Railway hydraulic magnetic circuit break…
- Unique arc chute design which results in higher interrupting capacities.
- Thermoset glass fi lled 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.
- Available with metric threaded stud terminals and american standard terminals.
- The breakers can also be equipped with an optional mid-trip handle style actuator.
- 0.02 - 100 amps.
- Precise, temperature independant, operation.
- Wide choice of time delays.
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ER-Series Railway hydraulic magnetic circuit break…
- Ideally for higher amperage applications
- Available woth 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 - 120 amps
- Precise, temperature independant, operation
- Wide choice of time delays
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FR-Series Railway hydraulic magnetic circuit break…
- Ideal for very high current applications
- Precise, temperature independent operation
- Panel/wall mount
- Integrated auxiliary contacts (optional)
- Up to 3 poles configuration
- High interrupting capacities due to unique arc chute method
- Mid-trip handle for electrical trip indication (optional)
- Immediate resetting possible
- Wide current range: 100 - 700 A
- Wide choice of time delays
- Maximum voltage 137.5 VDC / 277 VAC
- High contact pressure & longer contact life due to wiping self-cleaning contacts
- Flexibility by many options
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GR-Series Railway hydraulic magnetic circuit break…
- Integrated auxiliary change over contacts are optional (pre-mounted)
- 0,2 - 63A
- 440 VAC & 110 VDC
- Optional mid-trip handle style actuator
- 1-4 poles
- Precise, temperature independant, operation
- 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.
- Wide choice of time delays
See more details