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EATON C Series Molded Case Circuit Breaker Trip Units, K Frame


Eaton C Series moulded case circuit breaker trip units open the circuit during thermal overload, short circuit or ground fault. They are used in conjunction with circuit breakers to detect faults and trip the breaker. These trip units are available in thermal-magnetic and electronic LSI variant...s.Read more

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EATON KT3350TA
EATON KES3400LSIGB22B
EATON KWS4125LSI6C
EATON KT4315TD
EATON KT2400TE
StyleModelPrice (ex. VAT)
A
KT3350T		€1,000.21
B
KES3400LSIGB22		€11,104.57
C
KWS4125LSI6		€10,353.41
D
KT4315T		€3,948.98
A
KT3400TJ01		€2,833.26
D
KT4250T		€3,948.98
A
KT3400TA		€2,965.02
A
KT3400TV		€2,374.21
A
KT3150TV		€2,374.21
E
KT2400T		€724.93
E
KT2200TV		€1,983.27
B
KES3400ALSIG		€14,177.21
A
KT3400T		€1,000.21
B
KES3400ALSIGZG		€15,077.68
B
KES3250LSIGZG		€11,475.75
B
KES3400ALSI		€9,567.13
B
KES3250LSI		-
RFQ
B
KES3250ALSIGB22ZG		€15,607.00
B
KES3250ALSIZG		€10,467.63
B
KES3250LSGB21		€9,903.18
B
KES3250ALSIGB20		€15,650.92
C
KES3125LSIGB21		€11,772.24
C
KES3125LSGB22		€9,139.17
C
KWS4250LSI6		€10,353.41

Working Mechanism

Thermal-magnetic Trip Units:

  • Thermal-magnetic trip units consist of a thermal and a magnetic element to detect faults.
  • When the temperature of the circuit breaker exceeds a certain threshold due to a fault or other problem, the thermal element trips and interrupts the flow of current.
  • When the current flowing through the circuit breaker exceeds its interrupt rating, the magnetic element trips and interrupts the current flow.

Electronic Trip Units:

  • These units use zone selective interlocking to establish a communication scheme to connect line and load breaker trip units.
  • When a fault occurs, the trip units communicate to determine which load-side breaker is closest to the fault.
  • The trip unit in the breaker closest to the fault overrides any customer-defined delay and opens instantaneously.
  • It clears the fault and allows line-side breakers to remain closed.

Frequently Asked Questions

What type of circuit breaker configuration can this trip unit be installed on?

These trip units can be installed on two-pole, three-pole and four-pole circuit breakers.

How do you reset a trip unit?

  • Locate the circuit breaker that has tripped and switch it off.
  • Once the circuit breaker is off, switch it back on to reset the trip unit.

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