MODEL: MD7LWA

MD7LWA SPECIFICATIONS

ES-8060 Rev.9 Page 2/3

https://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

DISCHARGE

ELEMENT

DISCHARGE

ELEMENT

4

1

Series Resistance

(SHLD)

Surge Side

Protected Side

Protected Device

M-RESTER

SHLD

FG

+

–

*3

*2

*1

*1. Be sure to use twisted-pair cables.

*3. When the twisted-pair cable is with a shield, connect it to the surge protector’s terminal 8, and follow instructions given by the protected

device for the terminal 7. When SHLD is not isolated from NET A / B, DO NOT connect the terminal 7 to SHLD.

*4. 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.

*5. Be sure to ground the DIN rail. Recommended grounding resistance max. 100 ohms.

*6. Cross-wire from the DIN rail to the metal housing of the protected device to equalize the ground potential.

Ground only the surge protector when the protected device has no grounding terminal.

NET

A, B

DIN RAIL ADAPTOR

(for grounding)

DIN RAIL

Grounding

*4

*5

Crossover Wire*6