·Some details are not shown. Please refer to specification sheets for all information.

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
  EN 50581

EXTERNAL VIEW

CONNECTION EXAMPLES

GROUNDING

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch)

SCHEMATIC CIRCUITRY

M-System Co., Ltd.