MODEL: MAT3

MAT3 SPECIFICATIONS

ES-8164 Rev.3 Page 4/5

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

Power

Power

Power

Power

SPD1

2

1

PE

N

PE

N

A1

C

A2

3

SPD1

N

N

2

1

A1

C

A2

3

SPD1

PE

N

2

1

A1

C

A2

3

SPD1

PE

N

2

1

A1

C

A2

3

SPD1

■ ALARM OUTPUT

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

POWER SYSTEM

POWER SYSTEM

Single-phase/2-wire

Three phase/3-wire (delta connection)

(N)

Alarm output

Alarm output

Alarm output

*1

*1

*1

Protected

device

G

Protected

device

G

Circuit breaker

(N)

Circuit breaker

CONNECTION

CONNECTION

EXAMPLE

EXAMPLE

Power System (example)

Single-phase/2-wire 220V AC

MAT3–240xMx

Single-phase/2-wire 110V AC

MAT3–240xMx

SPD1

MAT3–240xMx

Power System (example)

SPD1

Power System (example)

SPD1

Power System (example)

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)

Single-phase/3-wire

*3

Circuit breaker

Single-phase/2-wire 110V AC

MAT3–240xMx

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

MAT3–240xMx

Three-phase/4-wire 220V AC

MAT3–2404Mx

*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 MAT3.

*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 single-phase/2-wire system, connect lines to terminal 1 and 2 of the MAT3. For single-phase/3-wire system, connect the neutral line to terminal 2

of the MAT3.

Protected

device

G

Protected

device

G

Circuit breaker *2

Alarm output

■ 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 MAT3 models.