Figure 1

Derating Curve - All EMH250 & EMH350 models

Input Characteristics

Characteristic

Minimum

Typical

Maximum

Units

Notes & Conditions

Input Voltage - Operating

80

115/230

275

VAC

Derate output power < 90 VAC. See fig. 1

Input Frequency

47

50/60

63

Hz

Power Factor

>0.9

EN61000-3-2 class A compliant

Input Current - No Load

0.05/0.03

A

115/230 VAC

Input Current - Full Load

2.6/1.3

3.7/1.8

A

115/230 VAC - EMH250

115/230 VAC - EMH350

Inrush Current

40

A

230 VAC cold start, 25 °C

No Load Input Power

5.8

6.4

1.0

W

EMH250

EMH350

EMH350 with output inhibit (via signal option)

Earth Leakage Current

90/160

250

µA

115/230 VAC/50 Hz (Typ.), 264 VAC/60 Hz (Max.)

Input Protection

F10 A/250 V internal fuse in both lines

Models and Ratings

Notes:

1. The EMH250 is available with a top mounted fan cover option. Add suffix ‘-TF’ to model number e.g. EMH250PS12-TF. See mechanical drawing later in this

datasheet. The fan supply V3 is no longer available with this option as it is used to drive the fan.

2. The EMH350 is available with various analog, digital signal and cover options. See availability table and mechanical drawing later in this datasheet. The fan supply

V3 is no longer available with cover options as it is used to drive the fan.

3. The EMH350D models are fitted with an integral ORing diode and are also available with various analog and digital signal options. See availability table and

mechanical drawing later in this datasheet.

Output Voltage V1

Output Current V1

Output Power

12 V

21.0 A

12 V/0.6 A

252 W

EMH250PS12

18 V

14.0 A

12 V/0.6 A

252 W

EMH250PS18

24 V

10.5 A

12 V/0.6 A

252 W

EMH250PS24

48 V

5.2 A

12 V/0.6 A

250 W

EMH250PS48

Output Voltage V1

Output Current V1

Standby Supply V2

Output Power

12 V

29.2 A

5.0 V / 2.0 A

12 V/0.6 A

354 W

EMH350PS12

18 V

19.5 A

5.0 V / 2.0 A

12 V/0.6 A

354 W

EMH350PS18

24 V

14.6 A

5.0 V / 2.0 A

12 V/0.6 A

355 W

EMH350PS24

48 V

7.3 A

5.0 V / 2.0 A

12 V/0.6 A

354 W

EMH350PS48

Output Voltage V1

Output Current V1

Standby Supply V2

Fan Supply V3

Output Power

12 V

29.2 A

5.0 V / 2.0 A

12 V/0.6 A

354 W

EMH350PS12D

18 V

19.5 A

5.0 V / 2.0 A

12 V/0.6 A

354 W

EMH350PS18D

24 V

14.6 A

5.0 V / 2.0 A

12 V/0.6 A

355 W

EMH350PS24D

48 V

7.3 A

5.0 V / 2.0 A

12 V/0.6 A

354 W

EMH350PS48D

40

50

80

60

70

90

100

80

90

85

275

Input Voltage (VAC)

2

Models & Ratings

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