M-System MDP-24-1 Data Sheet

MODEL: MDP-24-1

http://www.m-system.co.jp/ MDP-24-1 SPECIFICATIONS ES-8119 Rev.16 Page 1/4

Lightning Surge Protectors for Electronics Equipment M-RESTER

M•RESTER

MADE IN JAPAN N1430B

Lot.NO

MODEL

LIGHTNING SURGE PROTECTOR

FOR STANDARD SIGNAL LINE & PULSE USE

Functions & Features

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

• Absorbs surges only without affecting instrumentation
signal

• No interruption of signal by unplugging surge protector
element

• CE marking

• UL approval

Application Examples

• Protects two-wire transmission lines

• Protects electronic instruments’ I/O

Weight:
120 g (0.26 lbs), standard
145 g (0.32 lbs), with DIN rail mounting adapter

PERFORMANCE

Max. continuous operating voltage (Uc):
Line to line: 30 V min
Line to earth: ±300 V min
Voltage protection level (Up):

• @ 1 kV (100 A)
Line to line: 40 V max.
Line to earth: ±650 V max.

• @ 2 kV (1 kA)
Line to line: 45 V max.
Line to earth: ±800 V max.
Response time:
Line to line: ≤ 4 nsec.
Line to earth: ≤ 20 nsec.
Leakage current:
Line to line: ≤ 5 μA @ 30 V DC
Line to earth: ≤ 5 μA @ ±140 V DC
Max. discharge current (Imax): 5000 A (8 / 20 μs)
Nominal current (IN): 100 mA
Internal series resistance: 20 Ω ±10 % (including return)
Capacitance @ 1 MHz:
Line to line: ≤ 1000 pF
Line to earth: ≤ 100 pF

MODEL: MDP–24–1[1]

ORDERING INFORMATION

• Code number: MDP-24-1[1]
Specify a code from below for [1].
(e.g. MDP-24-1/A33)

[1] OPTIONS

DIN rail mounting adapter

blank: Without
/A33: With adapter (model: A-33) (UL unavailable)

GENERAL SPECIFICATIONS

Construction: Plug-in
Connection: M4 screw terminals (torque 0.8 N·m)
Screw terminal: Nickel-plated steel
Housing material: Flame-resistant resin (black)

INSTALLATION

Operating temperature: -5 to +55°C (23 to 131°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Surface or DIN rail

STANDARDS & APPROVALS

CE conformity:
EMC Directive (2004/108/EC)
EMI EN 61000-6-4
EMS EN 61000-6-2
Approval:
Protectors for Data Communications and Fire
Alarm Circuits (UL 497B)
Surge protection: IEC 61643-21 (Categories C1, C2)

MODEL: MDP-24-1

http://www.m-system.co.jp/ MDP-24-1 SPECIFICATIONS ES-8119 Rev.16 Page 2/4

CONNECTION EXAMPLES

M-RESTER

IN

M-RESTER

CURRENT LOOP SUPPLY

(protected device)

2-WIRE TRANSMITTER

(protected device)

CENTRAL

STATION

FIELD

G

FROM
FIELD

TO
CENTRAL
STATION

+

–

P–P+S–

S+

P–P+S–

S+

CABLE

GG

G

+
–

■ PROTECTING TWO-WIRE SIGNAL LINES ■ PROTECTING ELECTRONIC INSTRUMENTS’ I/O

P+

G

P–

S+
S–

+
–+–

U
V

G

Receiver

(protected device)

+
–

+
–

U
V

G

Transmitter

(protected device)

M-RESTER

S+

G

S–

P+
P–

M-RESTER

Signal

Line

*1

*2 *2

*1. Install a circuit protector when the transmitter output current exceeds 100mA.
*2. The M-RESTER is designed in particular to protect signal lines.

To protect power supply lines, install other types of surge protectors.

M-RESTER

PROTECTED

EQUIPMENT

G

G

CROSSOVER WIRE

GROUNDING

(100 ohms or less)

A crossover wire between M-RESTER ground and the ground or
metallic housing of the equipment is required for protection.
If the protected equipment has no ground terminal, ground the
M-RESTER only.
When the M-RESTER is mounted with DIN Rail Mounting Adapter,
connect the grounding wire to the mounting screw of the M-RESTER.

GROUNDING