MS-100W mini size switching power supply china factory

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 MS-100W mini size switching power supply china factory

The MS-100W mini size switching power supply china factory is part of the ELEHPD MS Series range. MS-100W mini size switching power supply china factory 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: mini size switching power supply 100w china factory 12v 24v have big stock MS-100W

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

mini type mini size MS series electric industry switching power supply MS series MS-100W

Features :

• Universal AC input / Full range

• Protections:Short circuit/Over load/Over voltage

• Cooling by free air convection

• 100% full load burn-in test

• Fixed switching frequency at 77KHz

• 2 years warranty

Details:

Model	MS-100-5	MS-100-12	MS-100-15	MS-100-24
Output	DC Voltage	5V	12V	15V	24V
Rated Current	20A	8.4A	6.7A	4.2A
Current Range	0~20A	0~8.4A	0~6.7A	0~4.2A
Rated Power	100W	100W	100W	100W
Ripple & Noise (max.) Note.2	100mVp-p	100mVp-p	120mVp-p	120mVp-p
Voltage Adj. Range	4.75~5.5V	10.8~13.2V	13.5~16.5V	21.6~26.4V
Voltage Tolerance Note.3	±2.0%	±1.0%	±1.0%	±1.0%
Line Regulation	±0.5%	±0.5%	±0.5%	±0.5%
Load Regulation	±1.0%	±0.5%	±0.5%	±0.5%
Setup,Rise time	200ms 100ms
Hold time (Typ.)	30ms
Input	Voltage Range	85 ~ 264VAC 120 ~ 370VDC
Frequency Range	47~63HZ
Efficiency(Typ.)	70%	76%	77%	79%
AC Current(Typ.)	0.5A/115VAC 0.25A/230VAC
Inrush Current (Typ.)	COLD START 15A/115VAC 30A/230VAC
Leakage Current	<0.5mA / 240VAC
Protection	Over Load	105 ~ 150% rated output power
Protection type : Hiccup mode, recovers automatically after fault condition is removed
Environment	Working Temperature	-10 ~ +60°c (Refer to "Derating Curve" )
Working Humidity	20~90% RH Non-condensing
Storage temp.& humidity	-20~+85°C, 10~95%RH
Temp. coefficient	±0.03%/°C (0~50°C)
Vibration	10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes
Safety & EMC (Note 4.)	Safety Standards	UL1012, UL60950-1, TUV EN60950-1, CCC GB4943 approved
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/ 25°c / 70% RH
EMC Emission	Compliance to EN55022 (CISPR22) Class B, EN61000-3-2,-3
EMC Immunity	Compliance to EN61000-4-2,3,4,5,6,8,11, EN55024, light industry level, criteria A
Others	MTBF	522.1K hrs min. MIL-HDBK-217F (25 °c)
Dimension	1599737mm (LWH)
Packing	0.48Kg; 30pcs/4.55Kg/0.9CUFT
Note	1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25°c of ambient temperature. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor. 3. Tolerance : includes set up tolerance, line regulation and load regulation.

Frequently asked questions about the MS-100W mini size switching power supply china factory

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.