MODEL: MD74R

MD74R SPECIFICATIONS

ES-8058 Rev.11 Page 1/3

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

Lightning Surge Protectors for

Electronics Equipment M-RESTER

LIGHTNING SURGE PROTECTOR FOR

RS-485 / RS-422

(ultra-slim)

Functions & Features

• High discharge current capacity 20 kA (8 / 20 μs), 1 kA (10

/ 350 μs)

• Ultra-thin 7-mm-wide module can be mounted in high

density

• Excellent protection employing multi-stage SPD circuits

• DIN rail mounting and grounding

• Shield terminal provided

7 [.28]

98

[3.86]

mm [inch]

95

[3.74]

MODEL: MD74R–[1][2]

ORDERING INFORMATION

• Code number: MD74R-[1][2]

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

(e.g. MD74R-FG/Q)

• Specify the specification for option code /Q

(e.g. /C01)

[1] SHIELD TERMINAL (to earth)

FF: Floating

FG: Grounding

[2] OPTIONS

blank: none

/Q: Options other than the above (specify the specification)

SPECIFICATIONS OF OPTION: Q

COATING (For the detail, refer to M-System's web site.)

/C01: Silicone coating

/C02: Polyurethane coating

GENERAL SPECIFICATIONS

Construction: Slim-sized front terminal structure

Degree of protection: IP20

Connection: Euro terminal block (torque 0.3 N·m)

Grounding: DIN Rail

Housing material: Flame-resistant resin (black)

INSTALLATION

Operating temperature: -25 to +85°C (-13 to +185°F)

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

Mounting: DIN Rail (TH35-7.5, 1-mm-thick)

Oxide film on the surface of an aluminium DIN rail may

lower the electric conductivity between this module and the

ground. Use a steel or copper rail.

Weight: 70 g (2.5 oz)