MODEL: MAT3

MAT3 SPECIFICATIONS

ES-8164 Rev.3 Page 3/5

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

CONNECTION EXAMPLES

5)a

5)b

N

L2

L1

L3

PE

N

2

1

PE

N

3

■ INSTALLATION EXAMPLES: Three-phase 4-wire connection

*1. The circuit breaker or the fuse as disconnectors must be installed.

Molded-case circuit breaker (MCCB) or residual current circuit breaker with overcurrent protection (RCD) can be used.

The rated interrupting capacity of the circuit breaker must be greater than the highest amount of current that could be available in the circuit.

Install MCCB (rated current 20

Or RCD with protection from nuisance tripping against transit voltages type or time-delay overcurrent protection type is recommended.

Recommended sensitivity current rating: 30mA

*2. Cable length between the branch point and the earthing: 0.5 meters or less recommended

*3. The protected device's metal enclosure must be cross-wired to the earth terminal of the MAT3. If the protected device has no earth terminal,

earth only the MAT3.

*4. In order to protect an electronic circuit such as measuring equipment or communication equipment, we recommend to use surge protectors

which have serial impedance incorporated such as M-System's models MAX, MMA, MAH.

*3

*2

*1

*4

1) : Protective device of the switchgear

2) : Circuit breaker

3) : Main earth terminal or busbar

4) : MAT3

5) : Earth conductor

5)a and/or 5)b

6) : Protected device

Residual

Current

Circuit

Breaker

2)

3)

6)

1)

4)