MODEL: MD72WD

MD72WD SPECIFICATIONS

ES-8068 Rev.6 Page 3/3

http://www.m-system.co.jp/

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch)

8

6

5

4

1

2

3

7

4

1

5

2

6

3

8

7

7

(.28)

98 (3.86)

[1.5 (.06)]

8–M3 EURO

TERMINAL

DIN RAIL

(35 mm wide)

DIN RAIL

ADAPTOR

WIRE INSERTION ANGLE: approx. 20°

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

5

2

6

3

7

8

4

1

DIN RAIL ADAPTOR

(for grounding)

DIN RAIL

Grounding

Crossover Wire

*1. Oxide film on the surface of an aluminium rail may lower the electric conductivity between this module and the ground.

Use a steel or copper rail.

*2. Be sure to ground the DIN rail. Recommended grounding resistance ≤100Ω

*3. Cross-wire between the DIN rail or the terminal 7 and the metal housing of the protected device to equalize

the earth potential. Ground only the surge protector when the protected device has no ground terminal.

*2

*1

*3

DISCHARGE

ELEMENT

Surge Side

Protected Side

Current Loop

Supply

+

–

FG

4 – 20mA

Transmitter

Field-mount

Surge Protector

(model: MD6x)

+

–

DISCHARGE

ELEMENT

Current Loop

Supply

+

–

FG

4 – 20mA

Transmitter

Field-mount

Surge Protector

(model: MD6x)

+

–

Specifications are subject to change without notice.