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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 ...Read More

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EATON KES3125LSGB22A
EATON KES3250ALSIGB20B
EATON KT2200TVC
EATON KT3150TVD
EATON KT4250TE
StyleModelMPNPrice
A
KES3125LSGB22		KES3125LSGB22£7,861.32
A
KES3125LSIGB21		KES3125LSIGB21£10,126.23
B
KES3250ALSIGB20		KES3250ALSIGB20£13,462.59
B
KES3250ALSIGB22ZG		KES3250ALSIGB22ZG£13,424.81
B
KES3250ALSIZG		KES3250ALSIZG£9,004.03
B
KES3250LSGB21		KES3250LSGB21£8,518.51
B
KES3250LSI		KES3250LSI-
RFQ
B
KES3250LSIGZG		KES3250LSIGZG£9,871.19
B
KES3400ALSI		KES3400ALSI£8,229.44
B
KES3400ALSIG		KES3400ALSIG£12,194.94
B
KES3400ALSIGZG		KES3400ALSIGZG£12,969.50
B
KES3400LSIGB22		KES3400LSIGB22£9,551.91
C
KT2200TV		KT2200TV£1,705.97
C
KT2400T		KT2400T£623.50
D
KT3150TV		KT3150TV£2,042.24
D
KT3350T		KT3350T£863.49
D
KT3400T		KT3400T£863.49
D
KT3400TA		KT3400TA£2,550.45
D
KT3400TJ01		KT3400TJ01£2,437.11
D
KT3400TV		KT3400TV£2,042.24
E
KT4250T		KT4250T£3,396.82
E
KT4315T		KT4315T£3,396.82
A
KWS4125LSI6		KWS4125LSI6£8,905.78
A
KWS4250LSI6		KWS4250LSI6£8,905.78

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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