Small volume size MS series switching mode

Q: 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.

Q: 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.

Q: 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.

Q: 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.

About the Small volume size MS series switching mode

The Small volume size MS series switching mode is part of the ELEHPD MS Series range. Small volume size MS series switching mode from the ELEHPD MS 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: small volume size MS series switching mode power supply export quality MS 15W

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 MS 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

small volume size MS series switching mode power supply export quality MS 15W

Features:
Had 170 ~ 264 VAC input voltage range
Had small volume, light weight, high efficiency
Characteristics: short circuit protection miscalculates/overload
Had natural cooling
With that took on light emitting diode (led)
1 0, 0% had burned machine full load test
1 years had quality guarantee
SPECIFICATION :

(Specification)	MS-15-5	MS-15-12	MS-15-24
DC output voltage	5V	12V	24V
Output voltage range	±2%	±1%	±1%
Rated output current	3A	1.3A	0.7A
Output current range	0-3A	0-1.3A	0-0.7A
Wave and noise	75mVp-p	50mVp-p	50mVp-p
Inlet stability	±0.5%	±0.5%	±0.5%
Load stability	±1%	±0.5%	±0.5%
DC output power	15W	15.6W	16.8W
Efficiency	73%	78%	80%
Adjustable range for DC voltage	+10,-5%	±10%	±10%
AC input voltage range	AC 170-240VAC 47-63Hz,240-370VDC
Input current	0.25A/230V
AC Inrush current	Cold-start current 30A/230V
Leakage current	<0.5mA/240VAC
Overload protection	105%-150% Type: pulsing hiccup shutdown Reset: auto recovery
Over-voltage protection	…………
High-temperature protection	…………
Temperature coefficient	±0.02%/°C(0~50°C)
Setup, rise, hold up time	200ms,100ms,30ms
Vibration	10~500Hz, 2G 10min,/1 cycle. Pariod for 60min,Each axes
Withstand voltage	Input and output internal:1.5KvAC,Input and enclosure:l.5KvAC,Output and enclosure:0.5KvA
Isolation resistance	input and output internal : input and enclosure, Output and enclosure:500VDC/100MΩ
Working temperature and humidity	-10°C~+60°C,20%~90%RH
Store temperature and humidity	-20°C~+85°C,10%~95%RH
Overall dimension	845838mm
Weight	0.3kgS
Safety standards	Meet UL 1012 requirement(Not apply for the mark)
EMC standards	Meet FCC PART 15 J Conduction class B

Frequently asked questions about the Small volume size MS series switching mode

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.