MODEL: MMAJ

MMAJ SPECIFICATIONS

ES-8155 Rev.3 Page 1/3

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

Lightning Surge Protectors for

Electronics Equipment M-RESTER

LIGHTNING SURGE PROTECTOR

FOR POWER SUPPLY USE

(fast response: 3 nsec.)

Functions & Features

• Designed to protect equipment from induced

lightning surges entering through power supply cables

• High discharge current capacity type with a

maximum of 20 kA is available.

• Degraded head element is automatically separated from

the power lines by the incorporated thermal breaker, and

the LED lamp (turns off) and the relay contact alert the

failure status.

• Conforms to IEC 61643-1 Class II, III

U

V

u

v

PE

Monitor

ALM

A2

A1

C

Surge

Side

Protect

Side

mm (inch)

139

(5.47)

80

(3.15)

88

(3.46)

MODEL: MMAJ-[1][2][3][4]

ORDERING INFORMATION

• Code number: MMAJ-[1][2][3][4]

Specify a code from below for each [1] through [4].

(e.g. MMAJ-10020MA)

[1] OPERATIONAL VOLTAGE

100: 100 V / 110 V / 120 V AC

200: 200 V / 220 V / 240 V AC

[2] LOAD CURRENT

10: 10 A

20: 20 A

30: 30 A

[3] MAXIMUM DISCHARGE CURRENT

L: 10 kA

M: 20 kA

[4] ALARM OUTPUT

A: With

Y: Without

GENERAL SPECIFICATIONS

Construction: Wall-mounted, front terminals; terminal cover

provided

Surge protection type: Surge energy limiting type two-port

SPD

Connection

Line: M4 screw terminal (torque: 1.2 N·m)

Alarm output: Tension clamp

Screw terminal: Nickel-plated steel

Housing material: Steel plate t = 1.2 (black)

Alarm output: SPDT relay contact trips when the thermal

breaker operates.

•Normal

Output terminal A1 – C: Open

Output terminal A2 – C: Close

•Thermal breaker operating or power off

Output terminal A1 – C: Close

Output terminal A2 – C: Open

Rated load:

250 V AC @1 A (cos ø = 1)

24 V DC @1 A (resistive load)

Maximum switching voltage: 250 V AC or 24 V DC

Maximum switching power: 250 VA or 24 W

Minimum load: 5 V DC @ 20 mA

Safety function: Thermal breaker incorporated

Monitor LED: Green LED; ON in normal conditions OFF in

failure conditions (power off or thermal breaker operating)

INSTALLATION

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

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

Mounting: Surface

Weight: 1.6 kg (3.5 lb)