Type 437

92 mm
Typ 437 von E-T-A: Einpoliger, thermisch-magnetischer Schutzschalter mit Kipphebelbetätigung und hohem Schaltvermögen.


Single pole high performance thermal-magnetic circuit breaker with tease-free, trip-free, snap action mechanism and toggle actuation (S-type TM CBE to EN 60934). Options include auxiliary contacts, a moulded flame retardant enclosure for added environmental protection, and remote operation - disconnection only, or disconnection and re-connection.

Technical Data

Voltage rating
  • DC 144 V
    higher voltage ratings upon request
Current ratings from 40 A up to 240 A  
higher current ratings upon request
Number of poles double pole
single pole
Mounting method socket
Terminal design screw terminals
Actuation manual release
Auxiliary contacts with auxiliary contacts
without auxiliary contacts
Water splash protection with water splash protection
without water splash protection
Illumination without illumination
Typical life 3,000 operations at 240 A, DC 180 V

10,000 operations at 240 A, DC 28 V

20,000 operations mechanical
Interrupting capacity Icn DC 180 V: 2,000 A, L/R = 0 ms

DC 28 V: 10,000 A, L/R = 0 ms

DC 28 V: 7,500 A, L/R = 13 ms


  • Automobiles
  • Commercial Vehicles
  • Rail vehicles
  • Watercraft & Vehicles


Datasheet & Explanations