MODEL: MD7PA

MD7PA SPECIFICATIONS

ES-8056 Rev.11 Page 1/3

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

Lightning Surge Protectors for

Electronics Equipment M-RESTER

LIGHTNING SURGE PROTECTOR FOR

PROFIBUS-PA

(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: MD7PA–[1]0[2]

ORDERING INFORMATION

• Code number: MD7PA-[1]0[2]

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

(e.g. MD7PA-FF0/Q)

• Specify the specification for option code /Q

(e.g. /C01)

[1] SHIELD TERMINAL (to earth)

FF: Floating

FG: Grounding

SAFETY APPROVAL

0: None

[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

APPLICABLE NETWORK

PROFIBUS-PA and other networks complied with

IEC 61158-2

Caution: Power supply to the bus must be limited to 400 mA

or less.

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)

PERFORMANCE

LINE TO

LINE

LINE TO

EARTH

SHLD TO

EARTH

Max. continuous

operating voltage (Uc)

±32V

±160V

±160V*

1

Voltage protection level

(Up) @4kV (1.2 / 50 µs)

±60V

±800V

±800V*

1

Leakage current @Uc

≤ 5µA

≤ 5µA

≤ 5µA*

1

Response time

≤ 4 nsec.

≤ 20 nsec. ≤ 20 nsec.*

1

Approx. capacitance

@10 kHz

1500 pF

100 pF

100 pF*

1

Max. discharge current

(Imax)

20kA (8 / 20 µs)

1.0kA (10 / 350 µs)

400mA

Internal series resistance

1.5Ω ±10% per line

Surge protection

IEC 61643-21 Categories C1, C2, D1

*1. Values for the oating type (FF). Shortcircuited for the ground-

ing type (FG).