China Best Brass Wall Switches Company –  YCW3 Air Circuit Breaker – CNC Electric
China Best Brass Wall Switches Company – YCW3 Air Circuit Breaker – CNC Electric
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China Best Brass Wall Switches Company – YCW3 Air Circuit Breaker – CNC Electric
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  • China Best Brass Wall Switches Company –  YCW3 Air Circuit Breaker – CNC Electric
  • China Best Brass Wall Switches Company –  YCW3 Air Circuit Breaker – CNC Electric
  • China Best Brass Wall Switches Company –  YCW3 Air Circuit Breaker – CNC Electric
  • China Best Brass Wall Switches Company –  YCW3 Air Circuit Breaker – CNC Electric
  • China Best Brass Wall Switches Company –  YCW3 Air Circuit Breaker – CNC Electric
  • China Best Brass Wall Switches Company –  YCW3 Air Circuit Breaker – CNC Electric

China Best Brass Wall Switches Company – ...

1. Overload protection
2. Short circuit protection
3. Controlling
4. Used in residential building, non-residential building, energy source industry and infrastructure.
5. According to the type of instantaneous release classified as follows : type B(3-5)ln, type C(5-10)ln, type D(10-20)ln

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Product Details

Type designation

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1. Rated current in scope of frame size
1600 Type In: 200A,400A,630A,800A,1000A,1250A,1600A
2000 Type In: 630A,800A,1000A,1250A,1600A,2000A
3200 Type In: 2000A,2500A,3200A
4000 Type In: 2500A,3200A,4000A
6300 Type In: 4000A,5000A,6300A
2. Number of poles
3-default
4-4 pole
3. Installation
Fixed type-horizontal, vertical
Drawout type-horizontal, vertical
4. Intelligent controller
M type
2M type: digital display, over-current protection (overload, short delay, instantaneous), 4P or 3P+N have earthing protection. 3M type: LCD display, over-current protection(overload, short delay,
instantaneous), 4P or 3P+N have earthing protection.
H type
2H type: communication function, digital display, over-current protection
(overload, short delay, instantaneous), 4P or 3P+N have earthing protection.
3H type: communication function, LCD display, over-current protection (overload,
short delay, instantaneous), 4P or 3P+N have earthing protection.
5. Common use accessory
Shunt release-AC220V/230V,AC380V/400V,DC220V,DC110V
Undervoltage release-AC220V/230V,AC380V/400V, it is classified to instantaneous type and time-delay type.
Closing electromagnet-AC220V/230V,AC380V/400V,DC220V,DC110V
Motor-driven energy-storage mechanism-AC220V/230V,AC380V/400V,DC220V,DC110V
Auxiliary contact-4a4b,2a6b,3a3b
Note: a-normal open, b-normal close
6.Optional accessory
Mechanical interlock;
One circuit breaker (1lock+1key)
Two circuit breaker(steel cable interlock, connecting rod interlock,2lock+1key)
Three circuit breaker(3lock+2keys, connecting rod interlock)
Automatic power transfer system
Current transformer connected with neutral lead

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Accessories of  YCW3

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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 long time to avoid the shunt release being damaged.

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Closing electromagnet

After the motor finishing 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 long time to avoid the closing release being damaged.

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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.

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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 closing 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

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Auxiliary contact

Standard model: 4NO/4NC
For YCW3-1600: only have 4NO/4NC;
For YCW3-2000, 3200, 4000, 6300: 4NO/4NC, 4NO+4NC, 2NO+6NC, 3NO+3NC.
Ith: AC380V/AC400V 0.75A, DC220V 0.15A, AC220V/AC230V 1.3A.

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Key lock

The OFF push-button of the breaker can be locked in the position of depress, and at this time, the breaker can not be closed for operation; 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: the air circuit breaker with key lock, when the key has to be pulled out, it is necessary to first press the OFF key, turn the key anticlockwise, and then pull out the key.
“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 locking device for three position(disconnected, test, connection) of draw-out type. Three position of circuit breaker is indicated by indicator, the driving and reversing handle is locked in the exact position, the lock can be released by the reset button.

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