MODEL: MD7JS

MD7JS SPECIFICATIONS

ES-8064 Rev.6 Page 2/2

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

Protected Side

Surge Side

M-RESTER

5

2

6

3

7

8

DISCHARGE

ELEMENT

4

5

6

8

4

1

2

3

7

1

Surge Side

Protected Side

M-RESTER

DIN RAIL ADAPTOR

(for grounding)

DIN RAIL

DIN RAIL ADAPTOR

(for grounding)

DIN RAIL

DISCHARGE

ELEMENT

Self-synch Transmitter

*1. Oxide coating 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 ≤100 Ω

*3. Cross-wire between the DIN rail 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.

S2

S1

S3

DISCHARGE

ELEMENT

DISCHARGE

ELEMENT

INPUT

–

U

V

+

OUTPUT

POWER

(Protected Device)

U

V

u

v

Surge Protector

for Power Supply

G

S3

S2

S1

R1

R2

SELF-

SYNCH

u

v

U

V

Surge Protector

for Power Supply

G

POWER

Grounding*2

Grounding*2

Crossover Wire

*3

Crossover Wire*3

*1

*1

Series Resistance

Series Resistance

Specifications are subject to change without notice.