CZWP100A Normally Open DC Contactor

In the field of electrical engineering, the importance of reliable control devices cannot be overstated. One such device that is highly regarded in a variety of applications is the normally open DC contactor. This electrical component plays a vital role in managing direct current (DC) circuits, making it an essential tool for professionals in this field. The normally open DC contactor is designed to remain in an open circuit when power is removed, ensuring safety and preventing accidental startup. This feature alone makes it the preferred choice for many industrial and commercial applications.

product details

FEATURES

The primary function of a normally open DC contactor is to control the flow of current in a DC circuit. When a control signal is applied, the contactor closes, allowing current to flow and energize the connected load. This mechanism is particularly useful in motor starting applications, where the ability to control power is critical. By using a normally open DC contactor, operators can effectively manage the starting and stopping sequence of the motor, ensuring smooth operation and reducing the risk of equipment damage.

SAYOON MODEL IMPLICATION

CZWP	100A	-S	-C	-K	-P	-M	-□	/24V
1	2	3	4	5	6	7	8	9

1	Product type
2	Rated current
3	Auxiliary switch: None-Without auxiliary switch; S-With auxiliary switch
4	Magnetic blow-out
5	Magetic holding structure: K-Two joint magnetic retention (Single coil, Two joint self-locking); 2K-Three joint magnetic retention (Double coil, Three joint self-locking)
6	Coil outgoing mode: P-6.3 insert; W-M5 screw
7	Mounting bracket type: M-Horizontal (default); X-Oblique; L-One vertical; 2L-Two vertical; 2N-Rear; 2K-Rear wide
8	Other function codes: l-With suppressor diode; R-With pre-charged resistance; U-Increase rated current; CO-Continuous; IN-Intermittent
9	Coil rated voltage: 12V, 24V, 36V, 48V, 60V, 72V etc.

Uses

This product have one normally open contact, It is suitable for electric control system, such as electric pump, telecommunication equipment, construction machinery, battery vehicle, crane, train, ship, uninterrupted power supply, etc.

Technical Parameters: (Version 1.37)

SAYOON Product Type	CZWP100A
Contact form	1 NO
Coil Rated voltage (DC V)	6V,12V,24V,36V,48V,60V,72V,84V,120V,150V,220V etc.
Contact voltage (DC V)	≤60V
Rated load current of contact 48V circuit (DC-1)	100A
Typical voltage drop across contacts per 100A	≯80mV
The cooling pull-in voltage at (20±5)℃ (V)	≯70%
The cooling drop-out voltage at (20±5)℃ (V)	≯35%,≮5%
Working voltage range of 40℃ coil	0.8-1.2Us
Drop-out time (n/o contacts to open)	40ms
Pull-in time (n/o contacts to close)	12ms
Maximum bounce time for contact connection	10ms
Maximum bounce time for contact disconnection	3ms
Insulation resistance	20MΩ
Electric strength to resist	50Hz/60Hz 1000VAC 1minute
Typical fault currents which can be ruptured	800A/5ms at 48V DC
Coil power (W)	8-25
Temperature rise of coil (K)	≤60
Temperature rise on outgoing terminal (K)	≤65
Electrical life	20,000 times
Mechanical life	300,000 times
Work specification	Continuous (default) or Intermittent
Contact material	Ag alloy
Load terminal type	M8 Screw
Coil terminal type	M5 Screw or 6.3mm spade terminals
Auxiliary contact rated load (optional)	2A/48VDC, 5A/24VDC
Testing organization certification	CCC,CE,FCC

Note:As regarding to the different using environments of customers which requires different focus of the functions,and in order to improve the comprehensive properties of our products,sayoon may adjust the coil parameters,temperature rise and so on. The above parameters are for reference only, For details, please refer to the guidelines for selection and use of the SAYOON DC contactor.

Load Characteristic Curve

Installation Diagram

Wiring Diagram

Temperature Curve

Mechanical Ability And Use Of The Environment

Contact lead M8 tightening torque (N.m)	≯9.0 appropriate
Coil lead-out torque (N.m)	Screw≯0.8 appropriate，spade terminals≯0.8 appropriate
Ambient temperature	-25~+70℃
Relative humidity	+20℃ 98%
Vibration freq. atthe fixed position	3G, 1～50Hz amplitude 0.5mm
Concussion	(60～100) time/minute、acceleration≤4g
Altitude	2000m
Installation direction	Random
International protection	IP50 (According IEC60947)

Order Instruction

SAYOON Product Type	CZWP100A
U.N.W.（Includes Horizontal frame）	431g(-M)
Mounting bracket type	M Horizontal(default), X slant , 1L One vertical, 2L Two vertical, 2N Rear，2K Rear wide

When ordering, please state the following: name, full model, control coil voltage specification, installation frame type, whether with auxiliary contact, order quantity. For example: DC Contactor CZWP100A/24V 100pcs, indicating the load rated current 100A, without auxiliary contact, default mounting bracket, coil control voltage 24V purchase 100pcs. Special voltage specification products, such as user needs can be special order.