M-System MD6N-24 Data Sheet

MODEL: MD6N-24

http://www.m-system.co.jp/ MD6N-24 SPECIFICATIONS ES-8284 Rev.5 Page 1/3

Lightning Surge Protectors for

■

SELECTABLE WIRING CONDUITS SPECIFIC TO EACH APPROVAL

‘N’ marked combinations are not selectable.

APPROVAL

0 1 2 3 4 5

WIRING CONDUIT

0 Y Y Y N N Y
1 Y Y Y Y Y Y
2 Y Y Y N Y Y

Electronics Equipment M-RESTER

5: FM nonincendive
Confirm selectable combinations of approval and wiring
conduit types in the table.

LIGHTNING SURGE PROTECTOR FOR STANDARD SIGNAL LINE & PULSE USE

(conduit mount, weather-proof, 24 V DC line voltage)
Functions & Features

• Designed specifically for 4 – 20 mA DC and
pulse signal line including both 4-wire and 2-wire
transmitters

• Direct mount in a wiring conduit of outdoor enclosures

• Absorbs surges only without affecting instrumentation
signal

• CE marking (conforms to ATEX and EMC)

MODEL: MD6N–24–[1][2][3]

[2] WIRING CONDUIT

0: G 1/2
1: 1/2 NPT
2: M20 × 1.5
Confirm selectable combinations of approval and wiring
conduit types in the table.

[3] BODY MATERIAL

B: Brass
S: Stainless steel

GENERAL SPECIFICATIONS

Degree of protection: IP65
Wiring conduit: See ‘Ordering information.’
Electrical connection: Leadwires
Leadwire diameters
Cable side & grounding: AWG20
Protected equipment side: AWG22
Body material: Nickel-plated brass or stainless steel 316

INSTALLATION

Operating temperature: -40 to +85°C (-40 to +185°F)
(See Safety Parameters for use in a hazardous
location.)
Mounting: Screwed into an electrical conduit of outdoor
enclosures
Weight: 330 g (0.73 lbs)

PERFORMANCE

Discharge voltage (peak voltage)
Line to line: 30 V min.

ORDERING INFORMATION

• Code number: MD6N–24–[1][2][3]
Specify a code from below for [1] through [3]
(e.g. MD6N-24-00B)
For the safety approval codes 2 and 4, specify the product’s
destination country using Ordering Information Sheet (No.
ESU-8284).

[1] SAFETY APPROVAL

0: None
1: FM intrinsically safe
2: CENELEC intrinsic safety (ATEX)
3: FM explosion-proof
4: CENELEC flameproof (ATEX)

Line to ground: ±160 V min.
Max. surge voltage
Line to line: 40 V max.
Line to ground: ±650 V max.
(The maximum voltage that could pass through the surge
protector. Protected equipment must be able to withstand
this voltage for a very short time period.)
Response time:
Line to line: ≤ 4 nsec.
Line to ground: ≤ 20 nsec.
Leakage current:
Line to line: ≤ 5 μA @ 30 V DC
Line to ground: ≤ 5 μA @ ±160 V DC
Discharge current capacity: 10000 A (8/ 20 μsec.)
Max. load current: 100 mA

MODEL: MD6N-24

http://www.m-system.co.jp/ MD6N-24 SPECIFICATIONS ES-8284 Rev.5 Page 2/3

Internal series resistance: Approx. 22 Ω including return

CENELEC: Intrinsic safety (ATEX)

II 1G, EEx ia IIC; T5 and T6

(EN 50020: 2002, EN 50284: 1999)

CENELEC: Flameproof (ATEX)

II 2G, Ex d IIC; T5 and T6

(EN 60079-1: 2004)

Max. line voltage
Without safety approval: 30 V DC
With safety approval: 28 V DC
Capacitance @ 1 kHz:
Line to line: ≤ 2500 pF
Line to ground: ≤ 100 pF

STANDARDS & APPROVALS

CE conformity:
ATEX Directive (94/9/EC)
EEx ia EN 50020: 2002
Category 1G EN 50284: 1999
Ex d EN 60079-1: 2004
EMC Directive (2004/108/EC)
EMI EN 61000-6-4: 2007
EMS EN 61000-6-2: 2005
Safety approval:
FM: Intrinsically safe
Class I, Div. 1, Groups A, B, C and D
Class II, Div. 1, Groups E, F and G
Class III, Div. 1
Class I, Zone 0, AEx ia IIC
T5 and T6
(Class 3610: 2010, ANSI/ISA 60079-11: 2009)
FM: Explosion-proof and Dust-ignition proof
Class I, Div. 1, Groups A, B, C and D
Class II, Div. 1, Groups E, F and G
Class III, Div. 1
T6
(Class 3615: 2006)
FM: Nonincendive
Class I, Div. 2, Groups A, B, C, and D
Class II, Div. 2, Groups E, F and G
Class III, Div. 1
T6
(Class 3611: 2004)

(ATEX))
Ii (Imax) 100 mA ('Any' for CENELEC intrinsic safety
approval (ATEX))
Pi 750 mW
Ci 2.5 nF
Li 0 mH

SAFETY PARAMETERS

Operating temperature:
T5 -40 to +80°C
T6 -40 to +70°C

-40 to +75°C for CENELEC (ATEX) flameproof

-40 to +80°C for FM explosion-proof and nonincendive
Ex-data:
Ui (Vmax) 30 V ('Any' for CENELEC intrinsic safety approval