Overview

FEATURES

The magnetic latching DC contactor works similarly to a conventional contactor, but it incorporates innovative features that enhance its functionality. At its core, the contactor uses electromagnetic force to keep the contacts closed. This magnetic latching feature is particularly beneficial because it allows the contactor to remain closed when the supply current is below a certain threshold. This feature not only ensures continuity of the circuit, but also improves energy efficiency, making it ideal for a variety of applications.

SAYOON MODEL IMPLICATION

CZWH	3000A	-K	-C	-S	-□	-□	/24V
1	2	3	4	5	6	7	8

1	Product type: 1NO 1NC
2	Rated current
3	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)
4	Magnetic blow-out
5	Auxiliary switch: None-Without auxiliary switch; S-With auxiliary switch
6	Mounting bracket type: 2L-Two vertical (default); L-One vertical; M-Horizontal
7	Other function codes: l-With suppressor diode; R-With pre-charged resistance
8	Coil rated voltage: 12V, 24V, 36V, 48V, 60V, 72V etc.

Uses

This product realizes zero power connection when working. Applicable to electroplating power supply, charging pile, telecommunication equipment, automation equipment, energy saving and environmental protection system, road traffic lighting system, program-controlled power supply and uninterruptible power supply equipment.

Technical Parameters: (Version 1.39)

SAYOON Product Type	CZWH3000A-K
Contact form	2 Circuit
Coil Rated voltage (DC V)	6V,12V,24V,36V,48V,60V,72V,84V,120V,150V,220V etc.
Contact voltage (DC V)	≤60 В
Rated load current of contact 48V circuit (DC-1)	3000A
Typical voltage drop across contacts per 100A	≯80mV
The cooling pull-in voltage at (20±5)℃ (V)	≯80%
The cooling drop-out voltage at (20±5)℃ (V)	≯80%
Working voltage range of 40℃ coil	0.8-1.2Us
Pulse dration	200ms≤t≤1s
Operating frequency(square wave)	1 minute≤6 times
Insulation Resistance	100MΩ
Electric strength to resist	50Hz/60Hz 2200VAC 1minute
Typical fault currents which can be ruptured	4000A/5ms at 48V DC
Coil power (W)	K Start: 30-42，2K Start: 60-82, Keep: 0
Temperature rise of coil (K)	Normal temperature
Temperature rise on outgoing terminal (K)	≤65
Electrical life	10,000 times
Mechanical life	300,000 times
Work specification	Continuous
Contact material	Ag alloy
Load terminal type	M12 Screw
Coil terminal type	0.3 square wire,320mm long
Auxiliary contact rated load (optional)	2A/48VDC, 5A/24VDC
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

Mechanical Ability And Use Of The Environment

Contact lead M12 tightening torque (N.m)	≯30 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	CZWH3000A-K
Package QTY.	4PCS
Mounting bracket type	2L Two vertical (default), 1L One vertical, M Horizontal

When ordering, please state the following: name, full model, control coil voltage specification, installation frame type, whether with auxiliary contact, order quantity. For example: Magnetic Holding DC Contactor CZWH3000A-K/24V 100pcs, indicating the load rated current 3000A, without auxiliary contact, default mounting bracket, coil control voltage 24V purchase 100pcs. Special voltage specification products, such as user needs can be special order.

CZWH3000A-K Magnetic Holding DC Contactor