ES-8109 Rev.10

MD-INS

Lightning Surge Protectors for
Electronics Equipment M-RESTER

LIGHTNING SURGE PROTECTOR FOR
ISDN CIRCUIT USE

Functions & Features
• Designed specifically to protect devices connected to ISDN circuit from lightning surges

MODEL: MD-INS

ORDERING INFORMATION

• Code number: MD-INS

GENERAL SPECIFICATIONS

Construction: Plug-in
Connection
ISDN circuit: Modular jack or M3.5 screw terminals
(torque 0.8 N·m)
Grounding: M3.5 screw terminals
(torque 0.8 N·m)
Modular jack cord: 6-pole, 2-core
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; Standard Rack Mounting Frame BX-16H available
Weight: 150 g (0.33 lb)

PERFORMANCE

Discharge voltage (peak voltage)
Line to line: ±65 V min.
Line to ground: ±290 V min.
Maximum surge voltage
Line to line: ±100 V max.
Line to ground: ±650 V max.
(The maximum voltage that could pass through M-RESTER. Protected equipment must be able to withstand this voltage for very short time period.)
Response time: ≤ 0.1 μsec.
Leakage current
Line to line: ≤ 50 μA at ±65 V DC
Line to ground: ≤ 50 μA at ±140 V DC
Discharge current capacity
Modular jack connection: 500 A (8 / 20 μsec.)
Screw terminal connection: 10000 A (8 / 20 μsec.)
Max. load current: 100 mA
Internal series resistance: Approx. 4 Ω including return
Maximum line voltage: ±65 V

STANDARDS & APPROVALS

EU conformity:
RoHS Directive

EXTERNAL VIEW

CONNECTION EXAMPLES

GROUNDING

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]