50A Latching Relay For Plug-in and PCB Terminals
● 50A switching capability● Single coil and double coil available
● Power Saving
● Green product
● RoHS Compliant
Model:NT91L(50A)
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Product Description
Features
Single and double coils magnet latching relay available
Switching capacity up to 50A.
Energy saving and enviromental friendly product.
Ordering Information
1 Part number: NT91L(50A)
2 Load: 50A/277VAC (Resistive load)
3000W 240VAC (Incandescent Lamp)
16A/280VAC (Electronic ballast)
5HP 250VAC (Motor load)
3 Contact arrangement A:1A; 1B:1B; C:1C
4 Enclosure: S: Wash tight E: Flux proof
5 Coil rated voltage(V): 5,12,24,48
6 Coil power: 1.5:1.5W; NIL:2×3W
7 Coil: NIL:Single coil; D: Double coils
8 High H:Standard; L:Low profile type
Contact Data
| Contact Arrangement | 1A(SPSTNO) 1B(SPSTNC) 1C(SPDT(B-M)) | ||
| Contact Material | AgSnO2 | ||
| Contact Rating (Resistive) | 50A/277VAC | ||
| Incandescent Lamp:3000W 240VAC | |||
| Electronic Ballast:16A/280VAC | |||
| Motor Load:5HP 250VAC | |||
| Max. Switching Power | 14000VA | ||
| Max. Switching Voltage | 440VAC | Max. Switching Current:75A | |
| Voltage Drop(Initial) | ≤20mΩ | Item 4.12 of IEC 61810-7 | |
| Operation Life | Electrical | 5×104 | I tem 4.30 of IEC 61810-7 |
| Mechanical | 1×106 | I tem 4.31 of IEC 61810-7 | |
Coil Parameter
| 1 Coil | ||||||||
| Dash numbers |
Rated voltage VDC |
Coil resistance Ω ± 10% |
Pick-up voltage VDC(max) (80%of rated voltage ) |
Operating voltage range VDC |
Plus duration |
Coil power W |
Set time ms |
Reset time ms |
| 005-1500 | 5 | 16.7 | 4 | 5~6 | ≥50 | 1.5 | ≤15 | ≤15 |
| 012-1500 | 12 | 96 | 9.6 | 12~14.4 | ||||
| 024-1900 | 24 | 384 | 19.2 | 24~28.8 | ||||
| 024-1500 | 48 | 1536 | 38.4 | 48~57.6 | ||||
| 2 Coil | ||||||||
| Dash numbers |
Rated voltage VDC |
Coil resistance Ω ± 10% |
Pick-up voltage VDC(max) (80%of rated voltage ) |
Operating voltage range VDC |
Plus duration |
Coil power W |
Set time ms |
Reset time ms |
| 005-3000 | 5 | 2×8.3 | 4 | 5~6 | ≥50 | 1.5 | ≤15 | ≤15 |
| 012-3000 | 12 | 2×48 | 9.6 | 12~14.4 | ||||
| 024-3000 | 24 | 2×192 | 19.2 | 24~28.8 | ||||
| 024-3000 | 48 | 2×768 | 38.4 | 48~57.6 | ||||
CAUTION:
1. When latching relays are installed in equipment, the latch and reset coil should not simultaneously. Coil should not be powered simultaneously. Coil should not be pulsed with less than the nominal coil voltage and pulse width should be a minimum of three times the specified operate time of the relay. If these conditions are not followed, it is possible for the relay to in be the magnetically neutral position .
2. Switching voltage is for test purpose only and are no to be used as design criteria.
Safety Approvals
| Safety approval | UL & CUR | CQC |
| Load | 50A/277VAC | 50A/277VAC |
Characteristics
| Insulation Resistance | 1000MΩ min (at 500VDC) | Item 4.11 of IEC 61810-7 |
| Dielectric Strength | ||
| Between Contacts | 50Hz 1500V 1min | Item 4.9 of IEC 61810-7 |
| Between Contact and Coil | 50Hz 1500V 1min | Item 4.9 of IEC 61810-7 |
| Shock Resistance | 196m/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℃ ~ 185℃ | |
| Relative Humidity | 5% to 85% | Item 4.16 of IEC 61810-7 |
| Mass | 31g (Low Profile Type) 35g | Item 4.7 of IEC 61810-7 |
Dimensions(mm)
CAUTION:
1. Relays shall have plus(+) signs or + and - placed on the circuit diagram as shown.
2. 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.
