SDC15-300A Starter DC Contactor

The SDC15-300A Starter DC Contactor is a compact, high-efficiency device built for managing high-current DC circuits in demanding applications such as electric vehicles and renewable energy systems. With a 300A rating, it delivers reliable power switching, low energy consumption, and strong thermal performance, making it ideal for harsh environments. Its durable design and easy installation ensure seamless integration into various technical setups.

product details

FEATURES

It is suitable for power switches of various equipment such as electric forklifts and battery vehicles. It has the advantages of small size, strong load, long life and easy maintenance. It complies with standards such as JB2286-78. It has reliable quality after testing and is well received by users.

SAYOON MODEL IMPLICATION

SDC15	-300A	-H	-W	-□	/24V
1	2	3	4	5	6

1	Product type
2	Rated current
3	Mounting bracket type: H-Arc (default); M-Horizontal
4	Coil outgoing mode: P-6.3 insert; W-M5 screw
5	Working mode: INT-Intermittent(default); CO-Continuous


6	Coil rated voltage:12V, 24V, 36V, 48V, 60V, 72V etc.

USES

The product has one normally open contact, which is suitable for electric control systems such as electric pump, oil pump, lifting coaming, construction machinery, crane and so on.

TECHNICAL PARAMETERS: (Version 1.27)

SAYOON Product Type	SDC15-300A
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)	300A
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)	30ms
Pull-in time (n/o contacts to close)	5ms
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	800A/5ms at 48V DC
Coil power (W)	IN: 18-30(default)/CO: 9-15
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	Intermittent (default) or Continuous
Contact material	Ag alloy
Load terminal type	M8 Screw
Coil terminal type	M5 Screw or 6.3mm spade terminals
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

TEMPERATURE CURVE

MECHANICAL ABILITY and USE of the ENVIRONMENT

Contact lead M8 tightening torque (N.m)	≯9.0 appropriate
Coil lead M5 tightening torque (N.m)	Screw≯0.8 appropriate，spade terminals≯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	IP55 (According IEC60947)

ORDER INSTRUCTION

SAYOON Product Type	SDC15-300A
U.N.W.	585g
Package QTY.	50 PCS
Mounting bracket type	None - H arc (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 SDC15-300A/24V 100pcs, indicating the load rated current 300A, without auxiliary contact, default mounting bracket, coil control voltage 24V purchase 100pcs. Special voltage specification products, such as user needs can be special order.