Accessories of YCW8

Shunt release

Shunt release can realize the remote control to break the circuit breaker.

●  rated control power voltage Us(V) AC220V/230V, AC380V/400V, DC220V, DC110V

●  work voltage (0.7~1.1)Us

●  breaking time (50±10)ms

Forbid making the power for longtime to avoid the shunt release being damaged.

Closing electromagnet

After the motor finishes the energy storage, closing release can instantly close the circuit breaker.

●  rated control power voltage Us(V) AC220V/230V, AC380V/400V, DC220V, DC110V

●  work voltage (0.85~1.1)Us

●  closing time (55±10)ms

Forbid making the power for longtime to avoid the closing release being damaged.

Under-voltage release

Without power supply, under-voltage release can't close. It is classified into instantaneous and time-delay type.

After closing the circuit breaker, under-voltage release can break the circuit breaker when the voltage drops to (70%~35%) Us. The circuit breaker can be closed again when power voltage recovers and exceeds 85%Us.

●  rated control power voltage Us(V) AC220V/230V,AC380V/400V

●  action voltage (0.35~0.7)Us

●  reliable making voltage (0.85~1.1)Us

●  reliable non-making voltage ≤0.35Us

●  delay time: 0.5s,1s,1.5s,3s (YCW3-1600 , non-adjustable);

0.5s, 1s, 3s, 5s(YCW3-2000A, 3200A, 4000A, 6300A, adjustable).

Make sure there is power supply on the under-voltage release before making the circuit breaker.

Motor-driven energy-storage mechanism

With the function of motor-driven storing and auto restoring energy after closing the circuit breaker, the mechanism can ensure to close the circuit breaker instantly after breaking the circuit breaker.

●  rated control power voltage Us(V) AC220V/230V,AC380V/400V,DC220V,DC110V

●  work voltage (0.85~1.1)Us

●  power loss 75W(1600A), 85W(2000A),110W(3200A,4000A),150W(6300A)

●  energy-storage time <5s

Auxiliary contact

Standard model: 4NO/4NC

For YCW3-2500,4000: 4NO/4NC, 4NO+4NC, 2NO+6NC, 3NO+3NC.

Ith: AC380V/AC400V 0.75A, DC220V 0.15A, AC220V/AC230V 1.3A.

Key lock

The OFF button of the circuit breaker can be locked in the depressed position and the circuit breaker cannot be closed in that case; when the user selects the option, the factory provides locks and keys; 

One breaker is provided with one lock and one key for the lock; two breakers are provided with two locks and one key for the locks; three breakers are provided with three same locks and two same keys for the locks.

Note:  It  is  necessary to firstly  press the  OFF  key and turn  it anticlockwise  before pulling out the key for the air circuit breaker with key lock equipped.

"Disconnected" position locking device for the draw-out type

For the “disconnected” position of the draw-out circuit breaker, a lock rod can be pulled out to lock the matter, and the breaker locked will be unable to be turned towards the TEST or CONNECTION position.

Padlocks have to be provided by users themselves.

Three position locking device for the draw-out

It is the locking device for three positions(disconnected, test, connection) of drawout type.

Three positions of circuit breaker is indicated by the indicator, the driving and the reversing handle which is locked in the exact position, and the lock can be released by the reset button.

Door-case

Installed on the door of the distribution cubicle, for sealing the distribution cubicle and making the protection class to IP40(fixed type and draw-out type).

Phases barrier (optional)

Installed between the bus-bars to increase the creepage distance.

Controller accessories

External N-pole transformer

In 3P+N system, it is used to measure N-pole current and fitted on the bus-bar by user.

Leakage current transformer

1. If the grounding protection is the leakage type, then a rectangular transformer will be needed.