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

MDK-24

Lightning Surge Protectors for
Electronics Equipment M-RESTER

LIGHTNING SURGE PROTECTOR FOR
STANDARD SIGNAL LINE USE

Functions & Features
• Designed specifically for 4 – 20 mA DC line including both 4-wire and 2-wire transmitters 
• Voltage & current signals up to 30 V DC
• Absorbing surges only without affecting instrumentation signal
• Shallow depth
• DIN rail mounting

MODEL: MDK-24

ORDERING INFORMATION
• Code number: MDK-24

GENERAL SPECIFICATIONS
Construction: Discrete box, front terminals; terminal cover provided
Connection: M3.5 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: DIN rail
Weight: 150 g (0.33 lbs)

PERFORMANCE
Discharge voltage (peak voltage)
  Line to line: 30 V min.
  Line to ground: ±290 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: ≤ 0.1 μsec.
Leakage current
  
Line to line: ≤ 5 μA at 30 V DC
  Line to ground: ≤ 5 μA at ±290 V DC
Discharge current capacity: 5000 A (8 / 20 μsec.)
Max. load current: 100 mA
Internal series resistance: 20 Ω ±5 %
Maximum line voltage: 30 V

CONNECTION EXAMPLES

GROUNDING

DIMENSIONS unit: mm (inch)

TERMINAL ASSIGNMENTS

SCHEMATIC CIRCUITRY

M-System Co., Ltd.