12V DC 5 Pin Dpst Automotive Relay

We are a modern enterprise with many years of experience in the production of ETC relay, electromagnetic ac relay, charging pile relay. We are equipped with advanced equipment and testing equipment to provide users with more advanced and reliable products and better services. We must be enterprising and indomitable perseverance, not to disgrace our mission, not to be entrusted, and strive to fulfill the expectations of society as well as our customers. Enterprise goal: high technology, high quality as the axis, value-added services for the added value, to establish a first-class company with international competition level. Service, quality and price are the beginning of cooperation between our company and our customers.

1 Product Introduction of 40 ampere clutch relay

Product feature:

◆ Small size, heavy contact load, capable of standing strong current of 40A at 14VDC.

◆ PC board mounting.

◆ Suitable for automatic control facilities and automobile application etc.

◆ Both European 11mm pole distance and American 8mm pole distance available.

◆ It automotive flasher relay

Definition for this relay.

Name rule :

BM940 - A - S

1             2   3

1 Model No.

2 Contact Form: A:1A;B:1B;C:1C

3 Package: S-Sealed None--Flux tight type

2 Figure sheet of 40 ampere clutch relay

Contact Rating
Contact Form			1A(1H) (SPSTNO),1B(1D) (SPSTNC),1C(1Z) (SPDT(B-M))
Contact Material			AgSnO2
Contact Load Capacity			1A: 40A/14VDC; 1B: 30A/14VDC; 1C NO: 40A/14VDC, NC: 30A/14VDC
Switching Power Max.			560W 2400VA
Switching Voltage Max.			75VDC 380VAC	Switching Current Max.:	40A
Contact Resistance Max.			≤30mΩ		IEC 61810-7
Life expectancy	Electrical		10 5		IEC 61810-7
	Machanical		10 7		IEC 61810-7

Coil Rating
No.	Coil Voltage(VDC)		Coil Resistance Ω±10%	Pick up (VDC) Max. (70% of Rated Voltage)	Drop out (VDC) Min.(10% of Rated Voltage)	Power (W)	Operate Time (ms)	Release Time (ms)
	Rated	Max.
1	6	7.8	19	4.2	0.6	1.9	≤5	≤3
2	9	11.7	42.6	6.3	0.9
3	12	15.6	90	8.4	1.2	1.6
4	18	23.4	202.5	12.6	1.8
5	24	31.2	360	16.8	2.4

Technical Rating
Insulation Resistance	Min.100MΩ(500VDC)	IEC 60255-5
Dielectric Strength Between Contacts	50Hz 500V	IEC 60255-5
Dielectric Strength Between Coil&Contact	50Hz 750V	IEC 60255-5
Shock Resistance	200m/s 2 11ms	IEC 68-2-27 test Ea
Vibration Resistance	10Hz～40Hz, double amplitude 1.27mm	IEC 68-2-6 test Fc
Leading-out Terminal Strength	10N	IEC 68-2-21 test Ua1
Weldability	235℃±2℃ 3s±0.5s	IEC 68-2-20 test Ta way1
Ambient Temperature	﹣40℃～125℃
Relative Humidity	85%(40℃)	IEC 68-2-3 test Ca
Weight	Approx. 19g,Open type:21g

3 Size and circuit of 40 ampere clutch relay

Outline Dimensions

Bottom View PCB Layout

Wiring Diagram ( Bottom View)

Engineering Data

4.Frequently Asked Question

Q:How many square meters of your factory?

A: More than 3000 square meter.

Q:What main software are you using in your product drawing?

A: We use the most advanced industry designing and developing software, like PRO/E CREO

Our company's business units focus on products and services to enhance the uniqueness and competitiveness of our 12V DC 5 Pin Dpst Automotive Relay. We already have a young, keen, energetic and ambitious team. We actively introduce and train elite talents, create opportunities for the best talents, and allow them to grow continuously to create the company's long-term development.

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