| The HAT Latching Relay is a heavy duty, single-coil latching relay, capable of switching 40 amps. The KLT Latching Relay is a highly reliable, miniature, single-coil latching relay; capable of switching up to 15 amps. These energy saving relays require no current to maintain contact closure, once the relay has been switched. To unlatch, simply reverse the polarity of the coil voltage. Save energy by implementing one of these latching relays into your system.
HAT901-L SERIES 40A
FEATURES
- Large switch capacity up to 40A
- Green Energy Saving
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CONTACT RATINGS |
| Contact Arrangement |
1A. 1B. 1C |
| Contact Resistance |
50mΩ (1A 24VDC) |
| Contact Material |
Silver cadmium oxide with copper base |
| Contact Rating (Resistive) |
30A/240VAC 20A/28VDC |
| Max. Switching Voltage |
277VAC/28VDC |
| Max. Switching Current |
40A |
| Max. Switching Power |
7200VA/560W |
| Mechanical Life |
1x107 times |
| Electrical Life |
1x105 times |
| CHARACTERISTICS |
| Insulation Resistance |
1000MΩ (at 500VDC) |
| Dielectric Strength |
Between coil & contacts |
2000VAC 1min |
| Between open contacts |
1500VAC 1min |
| Reacting time (at noml. volt) |
15ms max. |
| Resetting time (at noml. volt) |
10ms max. |
| Humidity |
98% RH, 40°C |
| Ambient temperature |
-20°C ~ +85°C |
| Shock Resistance |
Functional |
98m/s2 |
| Destructive |
980m/s2 |
| Vibration resistance |
10Hz to 55Hz 1.5mm DA |
| Unit weight |
Approx. 26g |
| Construction |
Wash tight, Flux proofed |
Notes
1) The data shown above Notes are initial values
2) Please find coil temperature curve in the charactic curved below |
ORDERING INFORMATION

| COIL DATA at 25°C |
Nominal Voltage VDC |
Action/Reset Voltage VDC |
Impulse Width ms |
Coil Resistance Ω +/- 10% |
5 |
4.0 |
100 |
21 |
6 |
4.8 |
100 |
30 |
9 |
7.2 |
100 |
67.5 |
12 |
9.6 |
100 |
120 |
24 |
19.2 |
100 |
480 |
48 |
38.4 |
100 |
1920 |
| SAFETY APPROVAL RATINGS |
| UL&CUL |
40A/277VAC
30A/28VDC |
OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT Unit: Inch (mm)
Outline Dimensions |
Wiring Diagram
(Bottom View) |
PCB Layout
(Bottom View) |
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Remark:
1) 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.
2) The tolerance without indicating for PCB layout is always +/-0.1mm. |
Notice
1. Relay is on the “reset” or “set” status when being released from stock, with the considerationof shock risen from transit and relay mounting, relay would be changed to “set” or “reset” status, therefore, when application (connecting the power supply), pleasereset the relay to “set” or “reset” status on request.
2. In order to maintain “set” or “reset” status, energized voltage to coil should reach the rated voltage, impulse width should
be 5 times more than “set” or “reset” time. Do not energize voltage to “set” coil and “reset” coil simultaneously; and also
long energized time (more than 1 min.) should be avoided.
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