MODEL: MD72W

MD72W SPECIFICATIONS

ES-8051 Rev.8 Page 4/4

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

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

5

2

6

3

7

8

DISCHARGE

ELEMENT

4

1

Surge Side

Protected Side

Fuse/Disconnect

DIN RAIL ADAPTOR

(for grounding)

DIN RAIL

Grounding

Current Loop

Supply

+

–

FG

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.

Without Fuse/Disconnect option, fuse circuit is shorted.

*2

*1

*3

4 – 20mA

Transmitter

Field-mount

Surge Protector

(model: MD6x)

+

–

*4.

*4

Specifications are subject to change without notice.