Overview

FEATURES

The product’s broad applicability makes it useful in a variety of industries. Electric vehicles such as electric forklifts and battery vehicles rely on efficient power management to ensure stable operation under high load conditions. For construction machinery such as tractors and excavators, this product can maintain reliability and improve work efficiency in harsh environments.

In the application of brick machines and sweeping vehicles, the product’s compact design and strong load capacity enable it to provide strong power support in limited spaces. In addition, the stability of the automotive air conditioning system also relies on the efficient control of this product to ensure passengers’ comfortable experience in various climate conditions.

In communication power supplies and uninterruptible power supply systems, the reliability of this product is crucial, ensuring rapid switching to backup power when power is interrupted to ensure the continued operation of equipment. The power switch of the electroplating electronic control system needs to accurately control the current to ensure the stability and safety of the production process.

This product complies with JB2286-78, JB3974-85, YD/585-92, YD/T512-92 and other standards. It has been strictly tested by the factory and relevant testing units to ensure that it meets the standard requirements. Users have spoken highly of its quality and reliability over many years of use, fully meeting user needs.

SAYOON MODEL IMPLICATION

SZJ	200A	-D	-S	-□	-□	/□
1	2	3	4	5	6	7

1	Product type
2	Rated current
3	Coil type: None-Double coils structure; D-Single coil structure
4	Auxiliary switch: None-Without auxiliary switch; S-With auxiliary switch
5	Mounting bracket type: M-Horizontal (default); E-Level embedded; X-Oblique; L(N)-Vertical; E1-Level embedded single direction
6	Other function codes
7	Coil rated voltage: 12V, 24V, 36V, 48V, 60V, 72V etc.

USES

This product is designed to play an important role in a variety of application scenarios. For electric vehicles, normally open contacts can effectively control the flow of current and ensure the safety and stability of the vehicle during startup and operation. In communications equipment, it can help manage power supplies to ensure equipment is not interrupted at critical moments.

In the application of construction machinery and electric forklifts, this product can improve the working efficiency of the equipment, reduce the failure rate and extend the service life. For large vehicles such as trains and ships, the reliability of normally open contacts is crucial, and they need to maintain stable performance in various complex environments.

In n uninterruptible power supply systems, this product can ensure that when the main power supply fails, the backup power supply can be quickly connected to ensure the continuous operation of the equipment. This versatile application makes this product have a wide market demand in modern industry and transportation fields.

TECHNICAL PARAMETERS: (Version 2.44)

SAYOON Product Type	SZJ200A-D
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 (A)	200A
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)	25ms
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	1000A/5ms at 48V/DC
Coil power (W)	7-15
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
Contact material	Ag alloy
Load terminal type	M8 Screw
Coil terminal type	M4 Screw
Auxiliary contact rated load (optional)	2A/48VDC, 5A/24VDC
Testing organization certification	CCC,CE,FCC,RoHS

Note: Due to the different usage environments of customers, the focus on functions is also different. In order to improve the overall performance of our products, SAYOON may adjust coil parameters, temperature rise, etc. The above parameters are for reference only.

In order to help users better select and use our DC contactors, we provide detailed selection and usage guides, covering the product’s technical specifications, installation requirements and maintenance recommendations. These materials will provide users with important references in practical applications to ensure that products can operate at their best and meet user needs to the greatest extent.

LOAD CHARACTERISTIC CURVE

INSTALLATION DIAGRAM

WIRING DIAGRAM

COIL TEMPERATURE CURVE

MECHANICAL ABILITY and USE of the ENVIRONMENT

Contact lead M10 tightening torque (N.m)	≯9.0 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	SZJ200A-D
U.N.W.	526g
Package QTY.	50PCS
Mounting bracket type	M Horizontal (default), E Level embedded, X Oblique, L (N) Vertical, E1 Level embedded single direction

When placing your order, please provide the following information: product name, complete model number, control coil voltage specification, mounting frame type, whether auxiliary contacts are required and order quantity. For example: 100 pieces of DC contactor SZJ200A-D/24V means the rated load current is 200A, no auxiliary contacts, the default mounting bracket, the control coil voltage is 24V, and the order quantity is 100 pieces. If you have special voltage requirements, please contact us and we will make special customizations according to your specific requirements to meet your specific application needs. By providing detailed order information, you will be able to obtain the products you need more smoothly and ensure the smooth progress of your project.