MODEL: MD7LWA

MD7LWA SPECIFICATIONS

ES-8060 Rev.9 Page 1/3

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

Lightning Surge Protectors for

Electronics Equipment M-RESTER

LIGHTNING SURGE PROTECTOR FOR

LonWorks

(ultra-slim, FTT-10A)

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: MD7LWA–[1][2]

ORDERING INFORMATION

• Code number: MD7LWA-[1][2]

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

(e.g. MD7LWA-FF/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

APPLICABLE NETWORK

LonWorks FTT-10A network

This unit is not applicable to LonWorks Link Power network.

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)

±1.5V

±100V

±160V*

1

Voltage protection level

(Up) @4kV (1.2 / 50 µs)

±30V

±370V

±800V*

1

Leakage current @Uc

≤ 5µA

≤ 20µA

≤ 5µA*

1

Response time

≤ 4 nsec.

≤ 20 nsec. ≤ 20 nsec.*

1

Approx. capacitance

@10 kHz

100 pF

100 pF

5 pF*

1

Max. discharge current

(Imax)

20kA (8 / 20 µs)

1.0kA (10 / 350 µs)

100mA

Internal series resistance

≤ 3.3Ω including return

Insertion loss

Surge protection

IEC 61643-21 Categories C1, C2, D1

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

ing type (FG).

STANDARDS & APPROVALS

EU conformity:

EMC Directive

EMI EN 61000-6-4

EMS EN 61000-6-2

RoHS Directive