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Product Type:

Hydraulic Magnetic Circuit Breaker


Carling Technologies' CX-Series circuit breaker features an innovative configuration that allows the breaker to safely handle high amperage and high DC voltage applications in a compact package. This circuit breaker is ideally suited for 380VDC applications, PDUs and photovoltaic energy systems.

By using a magnetic flux boosting terminal configuration, a strong magnetic field is created thus motivating the arc into an enhanced arc chamber.

Permanent magnets combined with the upper and lower arc runner increase the magnetic blow out force and aid in motivating the arc off of the contacts and into the arc chamber.

The arc chamber features arc splitter retainers with integrated pressurizing walls, which facilitates heat transfer from the arc providing additional cooling and quick transition into the magnetically induced splitter plates. In turn, the twelve (12) splitter plates attract, segment and cool the arc for full extinction.

1-5 pole; ratings from: 1 amp-125amps, up to 600VDC; UL489, UL489B,UL1077 and TUV EN60947-2

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UL 1077 recognized, UL489, UL489B
TUV Certified IEC/EN60947-2

Number of Poles

1-5 poles

Available Delays

DC Instantaneous, Ultra-Short, Short, Medium, Long
DC Switch only

Maximum Current and Voltage Ratings

UL 1077:
1-125A @ 300VDC
1-63A @ 440VDC
1-115A @ 600VDC

UL 489:
1-15A @ 250VDC (1 Pole)
1-15A @ 250/500VDC (2 Pole)
1-50A @ 205/410VDC (2 pole)

Maximum Interrupting Capacity

UL 1077:
5,000A @ 300VDC, 1-75A current rating
3,000A @ 300VDC, 76-125A current rating
10,000A @ 440DC, 1-30A current rating
5,000A @ 440DC, 31-63A current rating
5,000A @ 600DC, 1-75A current rating
3,000A @ 600DC, 76-115A current rating

UL 489:
5,000A @ 250VDC, 1-15A (1 Pole)
10,000A @ 250/500VDC, 1-15A (2 Pole)
10,000A @ 205/410VDC 1-50A (2 pole)

Auxiliary Switch Ratings


Available Circuits

Series Trip
Switch Only

Actuator Style

Solid Color Handle

Terminal Options

10-32 Screw
M5 Screw
1/4-20 Stud
M6 Stud

Mounting Method

Front Panel

Value Added

Custom actuator colors
Non-standard amp ratings
and more



High DC Voltage Applications:
Power Distribution Units (PDU)
Renewable Energy Systems
Power Convertors
Motor Controllers
Power Supplies
Mission Critical Equipment
UPS Systems
Smart Grids
EV Charging Stations
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