MODEL: MMH

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

MMH SPECIFICATIONS

ES-8179 Rev.3 Page 2/4

Leakage current

Line to line:

≤ 50 mA at 110 V AC (MMH-1x)

≤ 30 mA at 220 V AC (MMH-2x) including driving

current for the MEH and relay

Line to ground: ≤ 1 mA at 220 V AC

Discharge current capacity: 10000 A (8/ 20 μsec.)

Maximum load current:

10 A (MMH-x10)

30 A (MMH-x30)

Voltage drop: ≤ 1 V (50/60 Hz)

ALARM CONTACT

If a leak current greater than approx. 100 mA is detected

from the surge absorber element inside the MEH, the relay

driver circuit turns on the alarm contact output of the MMH

and the ALARM LED (red). When the alarm contact is output,

unplug the MEH and then plug it back in to check the

ALARM LED status and confirm that the element is failed. If

the ALARM LED remains ON, install a new MEH module.

(Refer to the instruction manual for MMH for replacing

procedure.)

During NORMAL operation, it is possible for the ALARM LED

to remain OFF and the ALARM contact to turn ON

momentarily when experiencing lightning surges. Please

continue use of the unit as this is standard operation.

CONNECTION EXAMPLES

6

4

7

3

G

5

1

2

U

V

B

BREAKER

AC POWER

SOURCE

Be sure to install a breaker.

M-RESTER

PROTECTED

EQUIPMENT

ALARM

*

*Turns on at the alarm condition.

GROUNDING

M-RESTER

PROTECTED

EQUIPMENT

G

G

CROSSOVER WIRE

GROUNDING

(100 ohms or less)

A crossover wire between M-RESTER ground and ground or metallic

housing of equipment is required for protection.

If the protected equipment has no ground terminal, ground the

M-RESTER only.