20A Power PCB Relay

Model:NT78

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● 20A switching capability
● Small size; light weight
● Plastic sealed and flux proofed types available
● RoHS Compliant
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Product Description

Features

Small size, light weight.

Low coil consumption.

PC board mounting.

Suitable for household electrical appliances, automation system, electronic equipment, instrument, meter, telecommunication facilities and remote control facilities.

Ordering Information

1 Part number: NT78

2 Contact arrangement: A:1A B:1B C:1C U:1U

3 Enclosure: S: Wash tight NIL:Flux proof

4 Coil power: 0.6:0.6W 0.8:0.8W

5 Coil rated voltage(V): DC:6,9,12,24

Contact Data

Contact Arrangement		1A(SPSTNO) 1B(SPSTNC) 1C(SPDT(B-M)) 1U(SPSTNODM)
Contact Material		AgSnO₂
Contact Rating (Resistive)		NO:20A/14VDC 10A/120VAC,5A/250VAC NC:15A/14VDC,10A/120VAC,5A/250VAC	IA:30A/14VDC	IU:2× 10A/14VDC
		Motor Load : 1/2HP 125VAC
		TV-5
Max. Switching Power		420W 1250VA
Max. Switching Voltage		30VDC 277VAC	Max. Switching Current: 30A
Voltage Drop(Initial)		Typ. 50mV(at 10A)	Item 4.12 of IEC 61810-7
Operational Life	Electrical	1×10⁵	Item 4.30 of IEC 61810-7
	Mechanical	1×10⁷	Item 4.31 of IEC 61810-7

CAUTION:

1.For the intermediate current, it only applies to the room temperature.

Coil Parameter

Dash numbers	Coil voltage VDC		Coil resistance Ω ± 10%	Pick-up voltage VDC(max) (80%of rated voltage )	Drop-out voltage VDC(min) (5% of rated voltage)	Coil power W	Operate time ms	Release time ms
Dash numbers	Rated	Max.	Coil resistance Ω ± 10%	Pick-up voltage VDC(max) (80%of rated voltage )	Drop-out voltage VDC(min) (5% of rated voltage)	Coil power W	Operate time ms	Release time ms
006-600	6	6.6	60	4.8	0.30	0.6	≤10	≤5
009-600	9	9.9	135	7.2	0.45
012-600	12	13.2	240	9.6	0.60
024-600	24	26.4	960	19.2	1.20
006-800	6	6.6	45	4.8	0.30	0.8	≤10	≤5
009-800	9	9.9	102	7.2	0.45
012-800	12	13.2	180	9.6	0.60
024-800	24	26.4	720	19.2	1.20

CAUTION:

1. The use of any coil voltage less than the rated coil voltage will compromise the operation of the relay. 2.Pickup and release voltage are for test purposes only and are not to be used as design criteria.

Characteristics

Insulation Resistance	100MΩ min (at 500VDC)	Item 4.11 of IEC 61810-7
Dielectric Strength
Between Contacts	50Hz 500V	Item 4.9 of IEC 61810-7
Between Contact and Coil	50Hz 500V	Item 4.9 of IEC 61810-7
Shock Resistance	98m/s² 11ms	Item 4.26 of IEC 61810-7
Vibration Resistance	10Hz~55Hz Double amplitude 1.5mm	Item 4.28 of IEC 61810-7
Terminals Strength	10N	Item 4.24 of IEC 61810-7
Ambient Temperature	-40℃ ~ 85℃
Relative Humidity	5% to 85%	Item 4.16 of IEC 61810-7
Mass	6g	Item 4.7 of IEC 61810-7

Safety Approvals

Safety approval	UL&CUR	TUV
Load	NO: 20A/14VDC 10A/120VAC NC: 10A/14VDC 1/2HP 125VAC TV-5	5A/250VAC

Dimensions(mm)

CAUTION:

In case of no tolerance shown in outline dimension: outline dimension ≤1mm tolerance should be ±0.2mm outline dimension >1mm and ≤5mm, tolerance should be ±0.3mm; outline dimension >5mm, tolerance should be ±0.4mm.

Reference Data

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Contact Info

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Address

NO.11, 125 Lane, Qi-Wen Road, Haishu District, Ningbo, Zhejiang, China, 315012
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Tel

+86-574-87483123
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E-mail

sales@forward-relays.com

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