Overview

FEATURES

Safety is paramount in any electrical application and DPDT DC contactors are equipped with built-in protection mechanisms to protect against overloads and short circuits. These safety features are designed to protect equipment and operators and ensure the system operates within safe parameters. In industries where electrical hazards can pose significant risks, the inclusion of safety mechanisms in DPDT DC contactors is a key aspect that enhances their appeal. Operators can work with confidence knowing that the contactors are designed to mitigate potential hazards.

SAYOON MODEL IMPLICATION

CZWH	400A	-2T	-S	-C	-M	-□	/24V
1	2	3	4	5	6	7	8

1	Product type
2	Rated current
3	Circuit structure: Double coil, double circuit, positive and negative switching
4	Auxiliary switch: None-Without auxiliary switch; S-With auxiliary switch
5	Magnetic blow-out
6	Mounting bracket type: M-Horizontal (default); L-One vertical; 2L-Two vertical; 4L-Four vertical
7	Other function codes: l-With suppressor diode; R-With pre-charged resistance; CO-Continuous; IN-Intermittent
8	Coil rated voltage: 12V, 24V, 36V, 48V, 60V, 72V etc.

Uses

This product have a switching phase contacts, for electric vehicles, telecommunication equipment, engineering machinery, car batteries, electric forklift trucks, trains, ships, electronic control systems such as uninterruptible power supply.

Technical Parameters: (Version 1.68)

SAYOON Product Type	CZWH400A-2T
Contact form	Convert the two groups (DPDT)
Coil Rated voltage (DC V)	6V,12V,24V,36V,48V,60V,72V,84V,120V,150V,220V etc.
Contact voltage (DC V)	≤80V
Rated load current of contact 48V circuit (DC-1)	400A
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	1500A/5ms at 48V DC
Coil power (W)	22-40
Temperature rise of coil (K)	≤80
Temperature rise on outgoing terminal (K)	≤65
Electrical life	20,000 times
Mechanical life	300,000 times
Work specification	Continuous or Intermittent(default)
Contact material	Ag alloy
Load terminal type	M10 Screw
Coil terminal type	6.3mm spade terminals
Auxiliary contact rated load (optional)	2A/48VDC, 5A/24VDC
Normally closed to normally open	14ms
Normally open to normally closed	8ms
Testing organization certification	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

Other Wiring Diagram

Temperature Curve

Mechanical Ability And Use Of The Environment

Contact lead M10 tightening torque (N.m)	≯20.5 appropriate
Coil lead-out torque (N.m)	≯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	IP40 (According IEC60947)

Order Instruction

SAYOON Product Type	CZWH400A-2T
U.N.W.	3270g
Package QTY.	10PCS
Mounting bracket type	M Horizontal (default), 2L Two vertical, 4L Four vertical

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 CZWH400A-2T/24V 100pcs, indicating the load rated current 400A, without auxiliary contact, default mounting bracket, coil control voltage 24V purchase 100pcs. Special voltage specification products, such as user needs can be special order.