Overview

FEATURES

The application fields of normally open DC contactors are very wide, including the following aspects:

1. Start and stop control of the motor

2. Power management of automation equipment

3. Control of solar and wind energy systems

4. Traffic lights and other control systems

Normally open DC contactors play an important role in modern industrial and commercial environments. In motor control, it can accurately manage the flow of current, ensure the smoothness of the motor when starting and stopping, and reduce mechanical wear and failure risks. In automation equipment, the contactor’s efficient power management function can optimize the operating efficiency of the equipment and reduce energy consumption.

In the field of renewable energy, the application of normally open DC contactors is also indispensable. In solar power generation and wind power generation systems, they are responsible for controlling the flow of current to ensure efficient use of energy and safe operation of the system. In addition, the application of contactors in traffic lights and other control systems demonstrates their importance in public safety and traffic management.

SAYOON MODEL IMPLICATION

SZJ	1000A	-S	-□	-□	/□
1	2	3	4	5	6

1	Product type
2	Rated current
3	Auxiliary switch: None-Without auxiliary switch; S-With auxiliary switch
4	Mounting bracket type: None-M Horizontal (default); E-Level embedded
5	Other function codes
6	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 1.45)

SAYOON Product Type	SZJ1000A
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)	1000A
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)	≯40%,≮5%
Working voltage range of 40℃ coil	0.8-1.2Us
Drop-out time (n/o contacts to open)	30ms
Pull-in time (n/o contacts to close)	15ms
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	3000A/5ms at 48V DC
Coil power (W)	Start: 140-190, Keep: 9-18
Temperature rise of coil (K)	≤50
Temperature rise on outgoing terminal (K)	≤65
Electrical life	10,000 times
Mechanical life	200,000 times
Work specification	Continuous
Contact material	Ag alloy
Load terminal type	2-M12 Screw
Coil terminal type	M4 Screw
Auxiliary contact rated load (optional)	2A/48VDC, 5A/24VDC
Testing organization certification	CE,FCC,RoHS

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 M4 tightening torque (N.m)	≯1.2 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	SZJ1000A
U.N.W.	2735g
Package QTY.	4PCS
Mounting bracket type	None – M Horizontal (default), E Level Embedded

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 SZJ1000A/24V 100pcs, indicating the load rated current 1000A, without auxiliary contact, default mounting bracket, coil control voltage 24V purchase 100pcs. Special voltage specification products, such as user needs can be special order.