ES-8131 Rev.10

MDR-8

Lightning Surge Protectors for
Electronics Equipment M-RESTER

MULTI M-RESTER

Functions & Features
• Designed specifically for ON-OFF signals, protecting semiconductor switches used for ON-OFF outputs from the computer or PLC from lightning surge damage that enters on the wiring between these instruments
• 8 channels
• Most convenient as junction board
• Minimum mounting space

MODEL: MDR–8

ORDERING INFORMATION

• Code number: MDR-8

GENERAL SPECIFICATIONS

Construction: terminal board; terminal cover provided
Connection: M3 screw terminals (torque 0.5 N·m)
Screw terminal: Nickel-plated brass
Housing material: Steel plate t = 1.2 (black)

INSTALLATION

Operating temperature: -5 to +55°C (23 to 131°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Surface
Weight: 510 g (1.12 lb)

PERFORMANCE

Discharge voltage (peak voltage)
Between each of S1–S8 lines: ±30 V min.
Each line – COM: 30 V min.
Each line or COM – G: ±60 V min.
Maximum surge voltage
Between each of S1–S8 lines: ±40 V max.
Each line – COM: 40 V max.
Each line or COM – G: ±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
Between each of S1–S8 lines: ≤ 5 μA at ±30 V DC
Each line – COM: ≤ 5 μA at 30 V DC
Each line or COM – G: ≤ 5 μA at ±60 V DC
Max. discharge current (Imax): 1000 A (8/ 20 μsec.)
Max. load current: 100 mA
Internal series resistance: Approx. 100Ω

CONNECTION EXAMPLES

GROUNDING

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]