About the Two group power supply D-120
The Two group power supply D-120 is part of the ELEHPD Multiple Series range. 120W Two group Switching power supply D-120W dual output power supply Features:·AC input voltage range selected by switch ·Small volume,low weight,high efficiency ·Protections:short circuit/over load/ over voltage ·LED indicator for power on ·100% full load burn-in test ·2 Year warranty ELEHPD manufactures and exports low voltage electrical products from Yueqing, Zhejiang, China, supplying distributors, panel builders, M&E contractors and OEM buyers worldwide.
Typical applications
- Motor control centres and pump or fan starters
- Machine building, conveyors, packaging and CNC equipment
- HVAC control panels and building automation
- Water treatment, irrigation and pumping stations
- Panel retrofits replacing electromechanical control gear
How to specify the right Multiple Series
- Size the contact rating for the inductive load, not just the resistive current (AC-3 duty for motors)
- Check the coil voltage and frequency available in the panel: 24 V DC, 110 V, 230 V or 400 V AC
- Confirm the auxiliary contact count needed for the control and indication circuit
- Match the enclosure rating to the environment (IP20 inside a panel, IP65 on the machine)
Specifications
120W Two group Switching power supply
D-120W dual output power supply
Features:·AC input voltage range selected by switch
·Small volume,low weight,high efficiency
·Protections:short circuit/over load/ over voltage
·LED indicator for power on
·100% full load burn-in test
·2 Year warranty
| D-120W Dual output switching power supply |
Model NO. |
OUTPUT |
Tolerance |
range |
efficiency |
| D-120A | 5V , 2-12A
12V, 0.5-5A | ± 2%
± 6% | 60mV
120mV | 78%
|
| D-120B | 5V , 2-10A
24V, 0.4-4A | ± 2%
± 7% | 60mV
150mV | 80%
|
| D-120C | 12V
24V | ± 2%
± 7% | 60mV
150mV | 80%
|
| AC input voltage range | 85-132VAC/170-264VAC 47-63HZ 240-370VDC |
| input current | 2.5A/115V 1.25/230V |
| AC inrush current | Cold-start current 35A |
| Leakage current | < 0.5mA/240VAC |
| Over load protection | 105-150%cutdown output, auto-recovery |
| set up, rise, hold up time: | 200mS 100ms 30ms |
| withstand voltage: | I/P-O/P: 1.5KVAC 1Minutes
I/P-FG: 1.5KVAC 1MInutes
O/P-FG: 0.5VAC 1minutes |
| working temperature | -10~+60° C |
| weight/packing: | 0.85kg 20PCS/17KG |
| Size | 199*110*50M M |
| certificate | CE ISO9000 ROHS |
| Warranty year | 1 year |
| Protections | Short circuit / Over load / Over voltage |
Frequently asked questions about the Two group power supply D-120
What is the difference between a contactor and a relay?
A contactor is built for switching power circuits repeatedly at high current, often with motor duty ratings (AC-3) and arc-suppressing chambers. A relay switches control signals at low current. In practice: contactor for the motor, relay in the control circuit that drives the contactor coil.
How do I calculate the correct contactor size for a motor?
Use the motor's full-load current, apply the AC-3 rating for the operating voltage, and allow for the number of starts per hour. As a rule of thumb, the contactor's AC-3 rating should be at least equal to the motor FLC, then step up one frame if the duty is heavy.
Do you supply the coil voltage I need?
Coil voltages are specified per order. Send the model number, coil voltage and frequency you require and we will confirm availability and lead time.
Are auxiliary contacts included?
Base models come with the standard auxiliary contact configuration for that frame. Add-on auxiliary blocks and mechanical interlocks can be quoted with the contactor.
Related Multiple Series models
Further reading
