MODEL: MDJST

MDJST SPECIFICATIONS

ES-8156 Rev.7 Page 2/3

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

PERFORMANCE

Insulation resistance: ≥ 100 MΩ with 250 V DC (Line to alarm output)

(The voltage more than 250 V DC turns the discharge element on; then the insulation between lines and alarm output will be

lost)

Surge protection: IEC 61643-21 Categories C1, C2, D1

NOMINAL VOLTAGE

MDJST-12x

MDJST-24x

MDJST-48x

Max. Continuous operating voltage (Uc)

Line to Line

±18V

±36V

±60V

Line to Earth

±160V

SHLD to Earth

±160V

Leakage current (initial value) @Uc

Line to Line

5μA max.

Line to Earth

5μA max.

SHLD to Earth

5μA max.

Voltge protection level (Up) @4kV(1.2/50 μs)

Line to Line

±30V

±50V

±90V

Line to Earth

±500V

SHLD to Earth

±600V

Surge energy attenuation ratio

Line to Line

74 dB min.

Line to Earth

74 dB min.

SHLD to Earth

–

Response Time (line to line)

3 nsec. max.

Max. discharge current (Imax)

20kA (8/20 μs)

Nominal current (I

1A

Internal series resistance

3Ω max.

AC durability

1 Arms (60 Hz 1s) 5 times

Operational attenuation

3 dB max. @DC to 4 kHz, Zo = 600Ω (8 dB max. @100 kHz)

EXTERNAL VIEW

Monitor LED

Check button

MONITOR

CHECK

■ For MDJST-xA1, MDJST-xA2

■ For MDJST-xY

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch)

1

2

3

4

7

6

8

5

26 (1.02)

107 (4.21)

26 (1.02)

15

(.59)

2–4.5 (.18)

HOLE

15 (.59) deep

DIN RAIL

35mm wide

[3.3 (.13)]

8–M3.5

SCREW

CLAMP

(top & bottom)

137 (5.39)

•When mounting, no extra space is needed between units.

7.8 (.31)