MODEL: MAKF

MAKF SPECIFICATIONS

ES-8143 Rev.3 Page 1/5

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

Lightning Surge Protectors for

Electronics Equipment M-RESTER

ONE-PORT SURGE PROTECTOR FOR

POWER SUPPLY USE

Functions & Features

• Designed to protect electronics equipment from induced

lightning surges entering through power supply cables

• Connected in parallel between the power and

ground lines regardless of load current

• Varistor discharge element has a high speed response

without follow current

• No interruption of power supply even when the head

element is removed: easy maintenance and replacing

• Degraded head element is automatically separated from

the power lines to prevent overheating, with a relay contact

output to alert the failure status

• Head-base connection is keyed so that only a head

element of correct line voltage can be mounted

Typical Applications

• Low-voltage distribution board

• Combination with installation for large load current

18 ( .71)

97

(3.82)

mm (inch)

65

(2.56)

MODEL: MAKF–[1][2]

ORDERING INFORMATION

• Code number: MAKF-[1][2]

Specify a code from below for each of [1] and [2].

(e.g. MAKF-120/AN)

[1] OPERATIONAL VOLTAGE

120: 120 V AC

240: 240 V AC

280: 280 V AC

400: 400 V AC

480: 480 V AC

[2] OPTIONS

Configuration

/AN: Without alarm output

/BN: Head element for replacement

RELATED PRODUCTS

•Single mount adaptor (model: MBS)

•Wiring bridge (model: CNB)

GENERAL SPECIFICATIONS

Construction: Plug-in

Degree of protection: IP20 (If the solderless terminals are

covered with insulation tubes.)

Surge protection type: Voltage limiting type one-port SPD

Connection

Line: M5 screw terminal (spring up-screw type)

(torque: 2.5 N·m)

Alarm output: Euro type connector terminal

(torque: 0.25 N·m)

Applicable wire size

Line connection: See the sloderless terminal drawing.

Housing material: Flame-resistant resin (black)

Alarm output: The SPDT relay trips when the thermal

breaker operates and/or the head element is removed.

Rated load: 250 V AC @0.5 A (resistive load)

125 V DC @0.2 A (resistive load)

Minimum switching load: 5 V DC, 1 mA

Line voltage identification key: The connection of the head

element and the base is keyed for exact matching.

Safety function: Thermal breaker incorporated

Failure indicator: The check window color changes from

green (normal) to black (failed and the thermal breaker

separated the M-rester from the circuit).

F

d : M5 use

B ≤ 13.0 mm

F ≥ 7.0 mm

T ≤ 1.8 mm

• Applicable Solderless Terminal Size

diameter

d

INSTALLATION

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

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

Mounting: DIN rail; Surface mounting available with the

Single Mount Adaptor model: MBS.

Weight: 100 g (3.53 oz)