MODEL: MAH

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

MAH SPECIFICATIONS

ES-8180 Rev.3 Page 1/4

Lightning Surge Protectors for

Electronics Equipment M-RESTER

LIGHTNING SURGE PROTECTOR

FOR POWER SUPPLY USE

(20 A)

Functions & Features

• Designed specifically for power requirements of medium

capacities (20 amps)

• Protecting electronic equipment from lightning surges that

enter through power supply circuits

• Discharge current capacity 10000 A

• Surge absorber failure indicated with LED

• Detaching the discharge elements from the power supply

circuits when fuses are blown

Typical Applications

• Computers and other electronic devices

• Control and telemetering systems

80 (3.15)

95 (3.74)

250 (9.84)

mm (inch)

MODEL: MAH–[1]

ORDERING INFORMATION

• Code number: MAH–[1]

Specify a code from below for [1].

(e.g. MAH-223)

[1] OPERATIONAL VOLTAGE

121: Single phase 2-wire, 100 V / 110 V / 120 V AC

221: Single phase 2-wire, 200 V / 220 V / 240 V AC

123: Single phase 3-wire, 100 V / 110 V / 120 V AC

(Phase voltage (line-neutrality))

223: Three phase 3-wire, 200 V / 220 V / 240 V AC

GENERAL SPECIFICATIONS

Construction: Stand-alone; terminal access at the front

Connection: M4 screw terminals (torque 1.6 N·m)

Screw terminal: Nickel-plated brass

Housing material: Steel plate t = 1.6 (black)

Alarm indicator LED: Red lights turn ON with power

supplied; OFF at error

INSTALLATION

Operating temperature: -5 to +55°C (23 to 131°F)

Operating humidity: 30 to 90 %RH (non-condensing)

Mounting: Surface

Weight: 2 kg (4.4 lbs)

PERFORMANCE

Response time: ≤ 0.1 μsec.

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

Maximum load current: 20 A

Voltage drop: ≤ 1 V (50/60 Hz)

BETWEEN LINES

LINE TO GND

MAH-121

(MAH-123

line-neutrality)

MAH-221, 223

(MAH-123 1-3)

Discharge volt.

(peak volt.)

190V min.

380V min.

380V min.

Max. surge

voltage *

350V max.

700V max.

700V max.

Leakage

current

≤40mA **

@110V AC

≤40mA **

@220V AC

≤1mA

@220V AC

* The maximum voltage that could pass through M-REST-

ER. Protected equipment must be able to withstand this

voltage for very short time period.

** Including the current consumed at the LEDs.