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Functions and characteristics

Item No.		CNS  800-1600
Number of poles		3P, 4P
Control	Manual	with toggle with direct or extended rotary handle
Connections	Fixed	front connections
	Plug-in	front connections/rear connections
Electrical characteristics as per IEC60947 and EN60947-2
Rated current(A) In	In	800, 1000, 1250, 1600
Rated insulation voltage(V)	Ui	800
Rated impulse withstand voltage(kV)	Uimp	8
Rated operational voltage(V)	Ue	AC 50/60Hz,690
Breaking capacity levels		N            H
Utilization category	AC	220/240V                        85          85
		380/415V                        50          70
		440V                               50          65
		500/525V                        40          50
		660/690V                        30          42
Operation performance	Mechanical	10000
	Electrical 440V	5000
Protection                                                                                          Chart C-1
Overload protection	long-time delay	Ir (In x......)
Short-circuit protection	short-time delay	Isd (Ir x......)
	Instantaneous	Ii (In x......)
Indication and control auxiliaries
Auxiliary switch		■
MX Shunt coil		■
MN under-voltage coil		■

Protection

Chart C-1

Protection thresholds and delays are set using the adjustment dials.
Offer standard long time delay setting module.

overload protection

True rms long-time protection.
Thermal memory: thermal image before and after tripping.

Short-circuit protection

Short-time(rms) and instantaneous protection.
Selection of l't type(ON or OFF)for short-time delay.

Neutral protection

On 3-pole circuit breakers, neutral protection is not possible.
On 4-pole circuit breakers, neutral protection may be set using a three-position switch: neutral unprotected (4P 3d), neutral protection at 0.5lr (4P 3d +N/2) or neutralprotection at lr (4P 4d).

lndications

Overload indication by alarm LED on the front; the LED goes on when the current exceeds the long-time trip threshold.

Test

A mini test kit or a portable test kit may be connected to the test connector on the front to check circuit-breaker operation after installing the trip unit or accessories.

Yueqing Shendian Electrical Co., Ltd