12V 24V 48V 80A 4 Pin Compound Switch Relays

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1 Product Survey for screw 4 pin 30 amp relay

Product feature:

◆ Contacts switching capability: 40A

◆ Dielectric strength between contact and coil 4000VAC

◆ PCB welding&bolts quick connect mounting type

◆ Special design for water heating, air conditioner and automatic control system

◆ Sealed type

◆ Environmental friendly product

◆ Outline Dimension 32*27*20（+9.5）mm

◆ At the end of this file customer can find the installing sketch of this relay.

◆ Screwed relay connected to the outer load

Designation principle:

Name rule :

NB902 E -12 S - S - A     T-105℃ M4

1                2 3    4    5     6   7        8

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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:: T-105℃: ambient temperature 105℃ none: normal ambient temperature

8: M4: Φ4.0 bolt mounting type

2 Information table of screw 4 pin 30 amp relay

Contact Rating
Contact Form	1A
Contact Material	AgCdO AgSnO2
Contact Load Capacity	NB902			NB902E
	40A 240VAC 30VDC 40A 277VAC			30A 240VAC 30VDC 30A 277VAC
	1.5HP 240VAC TV-15			1.5HP 240VAC TV-5
Switching Power Max.		NB902: 1200W 9600VA NB902E: 900W 7200VA
Switching Voltage Max.		30VDC/277VAC
Switching Current Max.		40A
Contact Resistance Max.		100mΩ（1A ，24VDC）
Life expectancy		Electrical 40A: 3x104 30A:5x104
		Machanical	10 7

Safety Certification
Approval	CQC	TUV	UL
Load	40A 240VAC 30VDC	40A 240VAC 30VDC	40A 277VAC 1.5HP 240VAC 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;	IEC 60255-5
Operate Time		≤15ms
Release Time		≤5ms
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.30.0g
Package		Sealed;Dust-proof type

3 Size and circuit of screw 4 pin 30 amp relay

Outline Dimensions

Bottom View Layout

Wiring Diagram(Bottom View)

Application Illustration

Engineering Data

4.FAQ

Q: What’s your MOQ?

A: MOQ is around 3000 pcs.

Q: Where we can get products information from?

A: You can contact our international marketing team.

We are honest, trustworthy, steady attitude and reliable quality, reasonable price, and strive to provide customers with satisfactory 12V 24V 48V 80A 4 Pin Compound Switch Relays. We inherit the essence of Chinese and Western cultural tradition and the achievements of modern civilization and carve the most perfect humanistic concept. We look forward to promote the industrialization, commercialization and maximization of technological innovation achievements, and continuously enhance the core competitiveness of enterprises.

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