50A Polarized PCB Latching Relay
● 50A switching capability● Single coil and dual coil available
● Energy Saving
● Environmental friendly product
Model:NT90L 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 NT90L
2 Load 50A/277VAC Resistive load
3000W 240VAC Incandescent Lamp
5A/280VAC Electronic ballast
2HP 250VAC Motor load
3 Contact arrangement A:1A B: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
7 Coil NIL:Single coil; D: Double coils
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 |
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| Max. Switching Power | 14000VA | |||
| Max. Switching Voltage | 440VAC | Max. Switching Current :50A | ||
| Contact Resistance | ≤20mΩ | Item 4.12 of IEC 61810-7 | ||
| Operation | Electrical | 5×104 | Item 4.30 of IEC 61810-7 | |
| Life | Mechanical | 1×106 | Item 4.31 of IEC 61810-7 | |
Coil Parameter
| 1 Coil | ||||||||||
| Dash numbers | Rated voltage VDC | Coil resistanceΩ±10% |
Set/Reset voltage VDC (80%of rated voltage) |
Operating voltage range VDC | Plus duration ms | Coil power W | Set time ms | Reset time ms | ||
| 005-900 | 5 | 16.7 | 4.0 | 5~6 | ≥50 | 1.5 | ≤15 | ≤15 | ||
| 012-900 | 12 | 96 | 9.6 | 12~14.4 | ||||||
| 024-900 | 24 | 384 | 19.2 | 24~28.8 | ||||||
| 048-900 | 481536 | 1536 | 38.4 | 48~57.6 | ||||||
| 2 Coils | ||||||||||
| Dash numbers | Rated voltage VDC |
Coil resistance Ω±10% |
Set/Reset voltage VDC ( 80%of rated voltage) |
Operating voltage range VDC | Plus duration ms | Coil power W | Operate time ms | Reset time ms | ||
| 005-1800 | 5 | 2×8.3 | 4.0 | 5~6 | ≥50 | 2×3.0 | ≤15 | ≤15 | ||
| 012-1800 | 12 | 2×48 | 9.6 | 12~14.4 | ||||||
| 024-1800 | 24 | 2×192 | 19.2 | 24~28.8 | ||||||
| 048-1800 | 48 | 2×768 | 38.4 | 48~57.6 | ||||||
CAUTION:
1. When latching relays are installed in equipment, the latch and reset 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.
Characteristics
| Insulation Resistance | 1000MΩ min (at 500VDC) | Item 4.11 of IEC 61810-7 |
| Dielectric Strength |
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| Between Contacts | 50Hz 1500VAC | Item 4.9 of IEC 61810-7 |
| Between Contact and Coil | 50Hz 2500V 4000V(Without Pin 6) 1min | Item 4.9 of IEC 61810-7 |
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| 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℃~85℃ | |
| Relative Humidity | 5% to 85% | Item 4.16 of IEC 61810-7 |
| Mass | 27g(Unenclosed) 31g | Item 4.7 of IEC 61810-7 |
Safety Approvals
| Safety approval | UL&CUR | CQC |
| Load | 50A/277VAC | 50A/277VAC |
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.
