About the Lrs Switching Power Supply DC AC Ultra Thin
The Lrs Switching Power Supply DC AC Ultra Thin is part of the ELEHPD LRS Series range. Lrs Switching Power Supply DC AC Ultra Thin from the ELEHPD LRS Series range. ELEHPD manufactures and exports low voltage electrical products from Yueqing, Zhejiang, China, supplying distributors, panel builders, M&E contractors and OEM buyers worldwide.
Full catalogue description: Lrs Switching Power Supply 1200W 48V DC AC Ultra Thin SMPS
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 LRS 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
| SPECIFICATION | |
| OUTPUT | 1200W |
| Model | LRS-1200-24 | LRS-1200-36 | LRS-1200-48 |
| DC Voltage | 24V | 36V | 48V |
| Rated Current | 50A | 33.3A | 25A |
| Current Range | 0~50A | 0~33.3A | 0~25A |
| Rated Power | 1200W | 1200W | 1200W |
| Ripple & Noise | 150mVp-p | 200mVp-p | 200mVp-p |
| Voltage Adj. Range | 21.6~28.8V | 32.4~39.6V | 43.2~52.8V |
| Voltage Tolerance | ±1.0% | ±1.0% | ±1.0% |
| Line Regulation | ±0.5% | ±0.5% | ±0.5% |
| Load Regulation | ±0.5% | ±0.5% | ±0.5% |
| Setup, Rise Time | 500ms, 30ms/230VAC 500ms, 30ms/115VAC at full load |
| Hold Up Time | 55ms/230VAC 10ms/115VAC at full load |
| INPUT | 110V 220V AC |
| Frequency Range | 47-63HZ |
| Efficiency | 89% | 90.50% | 91% |
| | |
| Over Voltage | | 41.4~48.6V | 55.2~ 64.8V |
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| Safety Standards | CE |
| Dimension | 215*115*50mm |
Frequently asked questions about the Lrs Switching Power Supply DC AC Ultra Thin
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 LRS Series models
Further reading
