ES-8051 Rev.10

MD72W

Lightning Surge Protectors for
Electronics Equipment M-RESTER

LIGHTNING SURGE PROTECTOR FOR
TWO-WIRE SIGNAL LOOP

(ultra-slim)
Functions & Features
• High discharge current capacity 20 kA (8 / 20μs), 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
• Loop disconnect fuse
Typical Applications
• Protecting a 2-wire transmitter loop
• Protecting an electronic device I/O

MODEL: MD72W–[1][2][3][4]

ORDERING INFORMATION

• Code number: MD72W-[1][2][3][4]
Specify a code from below for each of [1] through [4].
(e.g. MD72W-5500/Q)
For the safety approval code 2, specify the product’s destination country using Ordering Information Sheet (No. ESU-8057).
• Specify the specification for option code /Q
(e.g. /C01)

[1] NOMINAL VOLTAGE

07: 7 V DC
16: 16 V DC
32: 32 V DC
55: 55 V DC

[2] LOOP DISCONNECT FUSE

0: Without
1: With (ATEX intrinsic safety not available)

[3] SAFETY APPROVAL

0: None
2: ATEX intrinsic safety

[4] OPTIONS

blank: none
/Q: With options (specify the specification)
(ATEX intrinsic safety not available)

SPECIFICATIONS OF OPTION: Q

COATING (For the detail, refer to our web site.)
/C01: Silicone coating
/C02: Polyurethane coating

RELATED PRODUCTS

• Loop disconnect fuse (model: MD7F)

GENERAL SPECIFICATIONS

Construction: Slim-sized front terminal structure
Degree of protection: IP20
Connection: Euro terminal block (torque 0.3 N·m)
Applicable wire size: 0.2 – 2.5 mm², stripped length 8 mm
Grounding: DIN Rail
Housing material: Flame-resistant resin (black)
Loop disconnect fuse: Current rating 250 mA

INSTALLATION

Operating temperature: -25 to +85°C (-13 to +185°F)
(See Safety Parameters for use in a hazardous location.)
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)