ES-8155 Rev.4
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 of [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 mm
2
(6 to 7 mm
2
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
■ DERATING CURVE
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM