ES-8134 Rev.4
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 lb)
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