·Some details are not shown. Please refer to specification sheets for all information.

MMAJ

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

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
  Applicable wire size: 0.33 to 1.5 mm2
  (6 to 7 mm2 exposed)
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)

PERFORMANCE
Surge protection: IEC 61643-1 Class II, III

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch)

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

MG Co., Ltd.