
Features: • Universal AC input / Full range • Protections: Short circuit / Overload / Over voltage • Cooling by free air convection • 100%…
The 50W mostly model 12v 24v switching mode power supply is part of the ELEHPD S Series range. Features: • Universal AC input / Full range • Protections: Short circuit / Overload / Over voltage • Cooling by free air convection • 100% full load burn-in test • Fixed switching frequency at 77KHz • 2 years warranty 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: 50W mostly popular model 12v 24v switching mode power supply
Features :
• Universal AC input / Full range
• Protections: Short circuit / Overload / Over voltage
• Cooling by free air convection
• 100% full load burn-in test
• Fixed switching frequency at 77KHz
• 2 years warranty
| Model Specification | S-50-5 | S-50-12 | S-50-15 | S-50-24 |
| DC Output voltage | 5V | 12V | 15V | 24V |
| Output voltage range(Note:2) | ±2% | ±1% | ±1% | ±1% |
| Rated output current | 10A | 4.2A | 3.4A | 2.1A |
| Output current range | 0~10A | 0~4.2A | 0~3.4A | 0~2.1A |
| Wave and noise(Note:3) | 75mVp-p | 60mVp-p | 60mVp-p | 50mVp-p |
| Inlet stability(Note:4) | ±0.5% | ±0.5% | ±0.5% | ±0.5% |
| Load stability(Note:5) | ±1% | ±0.5% | ±0.5% | ±0.5% |
| DC output power | 50W | 50.4W | 51W | 50.4W |
| Efficiency | 71% | 78% | 78% | 80% |
| Adjustable range for DC voltage | +10,-5% | ±10% | ±10% | ±10% |
| AC input voltage range | 85~132VAC/170~264VAC selected by switch 47~63Hz,240~370VDC | |||
| Input current | 1.3A/115V 0.65A/230V | |||
| AC Inrush current | Cold-start current 18A/115V 36A/230V | |||
| Leakage current | <0.5mA/240VAC | |||
| Overload protection | 105%-150% Type: pulsing hiccup shutdown Reset: auto recovery | |||
| Temperature coefficient | ±0.03%/°C(0~50°C) | |||
| Setup, rise, hold up time | 200ms, 100ms, 30ms | |||
| Vibration | 10~500Hz, 2G 10min,/1 cycle. Period for 60min,Each axes | |||
| Withstand voltage | I/P-O/P:1.5KVAC I/P-FG:1.5KVAC O/P-FG:0.5KVAC | |||
| Isolation resistance | I/P-O/P, I/P-FG, O/P-FG:100M Ohms/500VDC | |||
| Working temperature and humidity | -10°C~+60°C(Refer to output load derating curve),20%~90%RH | |||
| Store temperature and humidity | -20°C~+85°C,10%~95%RH | |||
| Overall dimension | 159X97X38mm (L*W*H) | |||
| Weight | 0.5kgS | |||
| Safety standards | Meet UL 1012 requirement(Not apply for the mark) |
OVERALL DIMENSION (mm)

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.
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.
Coil voltages are specified per order. Send the model number, coil voltage and frequency you require and we will confirm availability and lead time.
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.







