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Miniature circuit breakers

Miniature circuit breakers are applied to protect electric applications against an over current. When an electrical circuit is not protected the application can be damaged and unsafe situations may happen like fire. Mors Smitt delivers a wide range of miniature circuit breakers specially designed and tested according to railway regulations.
 
 

The Mors Smitt miniature circuit breaker portfolio:

FR circuit breaker - hydraulic magnetic, railway, very high current
FR circuit breaker - hydraulic magnetic, railway, very high current
  • Ideal for very high current applications
  • Precise, temperature independent operation
  • Panel 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
AR-Series<br>Railway hydraulic magnetic circuit breaker
AR-Series
Railway hydraulic magnetic circuit breaker
  • 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 80Vdc
  • 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.
CR-Series<br>Railway hydraulic magnetic circuit breaker
CR-Series
Railway hydraulic magnetic circuit breaker
  • 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.
GR-Series<br>Railway hydraulic magnetic circuit breaker for 35mm rail
GR-Series
Railway hydraulic magnetic circuit breaker for 35mm rail
  • 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
ER-Series<br>Railway hydraulic magnetic circuit breaker
ER-Series
Railway hydraulic magnetic circuit breaker
  • 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 - 100 amps
  • Precise, temperature independant, operation
  • Wide choice of time delays
RBR-Series<br>Remote operated railway circuit breaker
RBR-Series
Remote operated railway circuit breaker
  • ON-OFF and trip indication
  • Load shedding
  • Energy management
  • Compact size
  • Automatic reset capable
  • Choice of interface styles
  • Panel or DIN rail mounting
  • Manual Operation Override
  • Fits into industry standard cut-out
Accessories for circuit breakers

Accessories for circuit breakers

Explore the product portfolio

Mors Smitt Group worldwide

 
Regional sales offices
Mors Smitt B.V.
Vrieslantlaan 6
3526 AA Utrecht
The Netherlands
T: +31 30 288 1311
Mors Smitt Asia Ltd.
29/F., Fun Tower
35 Hung To Road
Kwun Tong, Kowloon
Hong Kong
T. +852 2343 5555
RMS Mors Smitt
6 Anzed Court
Mulgrave,VIC 3170
Australia
T: +61 (0)3 8544 1200
Mors Smitt France SAS
Tour Rosny 2,
Avenue du Général de Gaulle
93118 Rosny sous Bois
France
T: +33 148 12 1440
Mors Smitt Technologies Inc.
1010 Johnson Drive
Buffalo Grove, IL 60089-6918
USA
T. +1 847 777 6497
Mors Smitt UK Ltd.
Graycar Business Park
Barton under Needwood
Burton on Trent
Staffordshire
DE13 8EN
United Kingdom
T: +44 1283 722650
Local sales & support offices
Mors Smitt Sales & Support - Brazil
Sao Paolo, Brazil
Mors Smitt Sales & Support - Gulf Region
Abu Dhabi, United Arab Emirates
Mors Smitt Sales & Support - Malaysia
Kuala Lumpur, Malaysia
Mors Smitt Sales & Support - China
Zhongshan, P.R. China
Mors Smitt Sales & Support - India
Bangaluru, India


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