MS-350W mini type size MS series switching power

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-350W mini type size MS series switching power

The MS-350W mini type size MS series switching power is part of the ELEHPD MS Series range. MS-350W switching power supply 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 37KHz • 2 years warranty SPECIFICATION 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 type size MS series switching power supply MS-350W

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

MS-350W switching power supply

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 37KHz

• 2 years warranty

SPECIFICATION

MODEL

MS-350-5

MS-350-12

MS-350-15

MS-350-24

OUTPUT

DC VOLTAGE

5V

12V

15V

24V

RATED CURRENT

70A

29A

23A

14.5A

CURRENT RANGE

0 ~ 70A

0-29A

0-23A

0-14.5A

RATED POWER

350W

350W

350W

350W

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 UP 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 START15A/115VAC 30A/230VAC

LEAKAGE CURRENT

<0.5mA/ 240VAC

PROTECTION

OVERLOAD

105 ~ 150% rated output power

Protection type : Hiccup mode, recovers automatically after fault condition is removed.

ENVIRONMENT

WORKING TEMP.

-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./1 cycle, period for 60min. each along X, Y, Z axes

SAFETY &

EMC

(Note 4)

SAFETYSTANDARDS

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

200*110*50mm (L*W*H)

PACKING

0.82Kg; 20pcs/16.4Kg

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 0.1 uf & 47uf parallel capacitor.

3.Tolerance : includes set up tolerance, line regulation and load regulation.

Frequently asked questions about the MS-350W mini type size MS series switching power

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 MS Series models

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mini type mini size MS series electric industry switching power supply MS series MS-60W

mini type mini size MS series electric industry switching power supply MS series MS-120W

mini type mini size MS series electric industry switching power supply MS-150W

mini type mini size MS series electric industry switching power supply MS-250W

MODEL	MS-350-5	MS-350-12	MS-350-15	MS-350-24
OUTPUT	DC VOLTAGE	5V	12V	15V	24V
RATED CURRENT	70A	29A	23A	14.5A
CURRENT RANGE	0 ~ 70A	0-29A	0-23A	0-14.5A
RATED POWER	350W	350W	350W	350W
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 UP 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 START15A/115VAC 30A/230VAC
LEAKAGE CURRENT	<0.5mA/ 240VAC
PROTECTION	OVERLOAD	105 ~ 150% rated output power
Protection type : Hiccup mode, recovers automatically after fault condition is removed.
ENVIRONMENT	WORKING TEMP.	-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./1 cycle, period for 60min. each along X, Y, Z axes
SAFETY & EMC (Note 4)	SAFETYSTANDARDS	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	20011050mm (LWH)
PACKING	0.82Kg; 20pcs/16.4Kg
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 0.1 uf & 47uf parallel capacitor. 3.Tolerance : includes set up tolerance, line regulation and load regulation.