MODEL: MAT2

MAT2 SPECIFICATIONS

ES-8149 Rev.12 Page 4/5

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

POWER SYSTEM

Power System (example)

SPD

Single-phase/2-wire 220V AC

MAT2–240x

Single-phase/2-wire 110V AC

MAT2–240x

SPD

Single-phase/2-wire 220V AC

MAT2–4404x

Single-phase/2-wire 110V AC

MAT2–240x

Single-phase/3-wire 400/200V AC

MAT2–4404x

Single-phase/3-wire 220/110V AC

MAT2–240x

SPD

Single-phase/2-wire

Generator or transformer

Generator or transformer

SPD

MAT2–4404x

MAT2–240x

Three phase/3-wire (delta connection)

(N)

Protected

device

G

2

1

PE

N

A1

C

A2

3

SPD

Alarm output

Circuit breaker

*1. For TT system, in order to ensure safe failure mode at TOV due to earth fault on high-voltage systems, connect between terminal 2 and N of the MAT2.

*2. For TT system, in order to ensure safe failure mode at TOV due to earth fault on high-voltage systems, install a four-pole (three-pole plus neutral)

circuit breaker.

*3. For 440V AC three-phase/3-wire system, use a residual current circuit breaker with overcurrent protection.

*4. For single-phase/2-wire system, connect lines to terminal 1 and 2 of the MAT2. For single-phase/3-wire system, connect the neutral line to terminal 2

of the MAT2.

Three-phase/4-wire 400V AC

MAT2–4404x

Three-phase/4-wire 220V AC

MAT2–2404x

Protected

device

G

2

1

PE

N

A1

C

A2

3

SPD

Alarm output

Circuit breaker

N

Power System (example)

Power System (example)

Power System (example)

CONNECTION

EXAMPLE

CONNECTION

EXAMPLE

POWER SYSTEM

Three-phase/3-wire 400V AC

Three-phase/3-wire 220V AC

Three-phase/4-wire (star connection)

Single-phase/2-wire

(three-phase delta connection

earthed in the middle of phases)

*3

*1

Generator or transformer

(N)

Protected

device

G

2

1

PE

N

A1

C

A2

3

SPD

Alarm output

Circuit breaker

*1

Generator or transformer

N

Protected

device

G

2

1

PE

N

A1

C

A2

3

SPD

Alarm output

Circuit breaker

*1

*4

Single-phase/3-wire

*2

■ ALARM OUTPUT

When the alarm output is to be transmitted remotely via outdoor cables, a surge protector for the signal line is required.

*1

*1

*1

*3

*2

■ CONNECTION EXAMPLES BY POWER SYSTEMS

Abnormal voltages appearing in case of a light load or a fault earth loop must be within the maximum continuous operational voltage when

selecting the MAT2 models.