CZW2000A Normally Open DC Contactor

Durability is another key attribute of normally-open DC contactors. Made from high-quality materials, these contactors offer excellent resistance to wear and corrosion. This makes them suitable for long-term use in harsh environments where exposure to moisture, dust, and other contaminants can compromise the performance of lower-quality components. By investing in normally-open DC contactors, operators can ensure their systems remain operational and efficient even under challenging conditions.

product details

FEATURES

Safety is paramount in any electrical system, and the normally open DC contactor is designed with this principle in mind. It has built-in overload and short-circuit protection mechanisms to protect equipment and operators. These safety features help reduce the risks associated with electrical failures by preventing excessive current and potential electrical faults. This is particularly important in industrial environments, where the consequences of equipment failure can be very serious.

SAYOON MODEL IMPLICATION

CZW	2000A	-S	-C	-K	-M	-□	/24V
1	2	3	4	5	6	7	8

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	Mounting bracket type: 2L-Two vertical (default); M-Horizontal
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 one normally open contact, 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 2.59)

SAYOON Product Type	CZW2000A
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)	≤80V
Rated load current of contact 48V circuit (DC-1)	2000A
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)	50ms
Pull-in time (n/o contacts to close)	50ms
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	4000A/5ms at 48V DC
Coil power (W)	20-45
Temperature rise of coil (K)	≤80
Temperature rise on outgoing terminal (K)	≤65
Electrical life	10,000 times
Mechanical life	300,000 times
Work specification	Continuous (default) or Intermittent
Contact material	Ag alloy
Load terminal type	3-M12 Screw
Coil terminal type	0.3 square wire,320mm long
Auxiliary contact rated load (optional)	2A/48VDC, 5A/24VDC

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 M12 tightening torque (N.m)	≯30.0 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	CZW2000A
U.N.W.	5150g
Package QTY.	4PCS
Mounting bracket type	2L Two Vertical(default), 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: DC Contactor CZW2000A/24V 100pcs, indicating the load rated current 2000A, without auxiliary contact, default mounting bracket, coil control voltage 24V purchase 100pcs. Special voltage specification products, such as user needs can be special order.