12V Voltage and 40A Rated Current Relay

It is necessary to go beyond geographical restrictions, focus on the global market, adjust the strategic layout, while stabilizing the domestic competitive position, go to the world, actively participate in the market competition in the international switching relay 24v, relay indoor ac, 5v 15 amper relay manufacturing field, and create a new level of growth. The company continuously upgrades its products, and actively engages in technical exchanges and cooperation with foreign companies in accordance with the country's energy-saving and environmental protection policies. We remain sensitive to users' needs, attach importance to users' consumption experience, and appropriately exceed users' expectations in terms of service level. We roll out the implementation of green development plan, resolutely fight the battle of pollution prevention and control, and strive to be a model of safe development, green development leader.

1 Product Survey of pcb 40a 12v relay

Product Features :

◆High contact Load ability: 40A

◆ 2500VAC&4000VAC is acceptable for insulative strength between contact and coil

◆ Coil insulation rank Class F

◆ Contacts forms NO,NC&SPDT

◆ Dust-proof&Sealed type

◆ Agree with RoHS-Directive

◆ Measurement: 32*27.2*20mm

◆ It Can replace Songchuan's similar relay with model No.

Definition method for this relay, choose correct model according to your purchase intention pls.

NB90  E  -12  S  -S  -A  4  W  4KV  L  T-105℃   X

  1    2   3   4  5    6  7  8    9   10    11     12

1:  Relay Model    2: NO max load 30A, none: 40A   3: Coil rated voltage  4: package S: Sealed, D: dust proof.

5:  Contact Material: S:AgSnO2  C:AgCdO  6:  Contact Form:   A:Normally Open  B:Normally Close  C:SPDT(NO&NC)

7:  Pin Form: A4:Normally open(4 pins), A5:Normally open(5 pins); B4:Normally close(4 pins), B5:Normally colse(5 pins);  C5:SPDT(5 pins), C6:SPDT(6 pins). 

8: W: white None: black  9:  4KV: Dielectric Strength between contact and coil 4000VAC  none: Dielectric Strength between contact and coil 2500VAC

10: L: coil power consumption 600mW, none: 900mW    11: T-105℃: ambient temperature 105℃   none: normal ambient temperature

12:  X: customer used code

Overview

40a 12v Relay is an electronic control device. It has control system (also known as input circuit) and controlled system (also known as output circuit). It is usually used in automatic control circuit. In fact, it is an "automatic switch" that uses small current to control large current. Therefore, it plays the role of automatic regulation, safety protection, conversion circuit and so on.

40a 12v Relay is an automatic switching element with isolation function. It is widely used in remote control, telemetry, communication, automatic control, mechatronics and power electronic equipment. It is one of the most important control elements. We have always adhered to the corporate philosophy of "credit first, quality first, service first, customer first", and achieved a good reputation in the product industry by virtue of stable and reliable resources, advanced and mature technology research and development, safe and high-quality operation services, and honest and satisfactory after-sales service. 

2 Figure diagram of pcb 40a 12v relay

Contact Rating
Contact Form	1A,1B,1C
Contact Material	AgCdO AgSnO2
Contact Load Capacity	NB90			NB90E
	40A 240VAC/30VDC 40A 277VAC 1.5HP 1HP 240VAC TV-5 TV-15			30A/20A 240VAC/30VDC 30A 277VAC 1HP 1/2HP 240VAC TV-5
Switching Power Max.		1200W 11000VA
Switching Voltage Max.		30VDC/277VAC
Switching Current Max.		40A
Contact Resistance Max.		50mΩ(1A ,24VDC)
Life expectancy		Electrical	40A: 2x104 30A: 2x104
		Machanical	10 7

Safety Certification
Approval	CQC	TUV	UL
Load	30A/40A 240VAC 30VDC	30A/40A 240VAC 30VDC	30A/40A 277VAC 1.5HP 1HP 1/2 HP 240VAC TV-5 TV-15

Coil Rating
900mw							600mw
No.	Coil Voltage		Coil Resistance Ω±10%	Pick up (VDC) Max. (75% of Rated Voltage)	Drop out (VDC) Min.(10% of Rated Voltage)		No.	Coil Voltage		Coil Resistance Ω±10%	Pick up (VDC) Max. (75% of Rated Voltage)	Drop out (VDC) Min.(10% of Rated Voltage)
	Rated	Max.						Rated	Max.
5	5	6.5	28	3.75	0.5		3	3	3.9	15	2.25	0.3
6	6	7.8	40	4.5	0.6		5	5	6.5	42	3.75	0.5
9	9	11.7	90	6.75	0.9		6	6	7.8	60	4.5	0.6
12	12	15.6	160	9	1.2		9	9	11.7	135	6.75	0.9
15	15	19.5	250	10.25	1.5		12	12	15.6	240	9	1.2
18	18	23.4	360	13.5	1.8		15	15	19.5	375	10.25	1.5
24	24	31.2	640	18	2.4		18	18	23.4	540	13.5	1.8
48	48	62.4	2560	36	4.8		24	24	31.2	960	18	2.4
110	110	143	13445	82.5	11		48	48	62.4	3840	36	4.8

Technical Rating
Insulation Resistance		Min.1000MΩ(500VDC)	IEC 60255-5
Dielectric Strength	Between Contacts	1500VAC, 50/60Hz 1min; Max 4000 VAC	IEC 60255-5
	Between Coil&Contact	2500VAC 50/60Hz Min; (4000VAC Min without Pin #6,when required)	IEC 60255-5
Operate Time		≤15ms
Release Time		≤10ms
Shock Resistance		Operation extremes 10G Damage limits 100G	IEC 68-2-27 test Ea
Vibration Resistance		10Hz～55Hz double amplitude 1.5mm	IEC 68-2-6 test Fc
Ambient Temperature		﹣55℃～85℃;﹣55℃～105℃
Relative Humidity		85% RH , 40℃	IEC 68-2-3 test Ca
Weight		Approx.26.0g
Package		Sealed;Dust-proof type

3 Measurement and electrocircuit of pcb 40a 12v relay

Outline Dimensions

Bottom View Layout

Wiring Diagram(Bottom View)

Engineering Data

4.Frequently Asked Question

Q: Which shipping way can you provide?

A: We can provide shipping by sea, by air and by express.

Q: Do you have a lab in your company.

A: Yes we have a lab.

We take 12V Voltage and 40A Rated Current Relay that cater to and meet the needs of customers as our responsibility, and we have an independent research and development department to continuously introduce new ones. Our company has optimized our production process, improved the utilization rate of materials, reduced the consumption of resources, reduced our production costs, and improved our image in the public mind. We use flexible design and efficient use of space, lead the market trend with high-quality products, and have won a wide range of popularity and reputation.

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