Technical Specifications Nominal Discharge Current: defined surge capacity Maximum Continuous Operating Voltage: rated for low‑voltage distribution system Mounting: 35 mm DIN‑rail mounting Protection Class: IP20 Operating Temperature: ‑40 ℃ to +80 ℃ Structure: plug‑in replaceable surge module with base unit
Functional Features Absorb lightning surge and switching transient over‑voltage in power distribution loop. Plug‑in modular design supports fast on‑site module replacement. Built‑in fault status indication for module ageing or failure. Compact DIN‑rail installation saves cabinet internal space.
Application Scenarios Surge protection for low‑voltage power distribution cabinet inlet terminal. Equipment surge protection for automation control cabinet power supply loop. Auxiliary power anti‑surge protection for substation secondary cabinet. Lightning surge protection for on‑site unattended electrical cabinet.
Performance Parameters Fast response speed for transient surge impulse. Surge energy absorption capacity meets low‑voltage power distribution requirement. Status indicator reflects module ageing and failure condition reliably.
Material Composition Flame‑retardant plastic housing for base and plug‑in module. Metal‑oxide varistor core components. Metal spring contact parts. DIN‑rail metal spring clip assembly.
Structural Features DIN‑rail mounted fixed base unit. Plug‑gable replaceable surge module. Front‑side visual status indicator window. Screw terminals for power circuit wiring.
Working Principle When transient surge over‑voltage invades power line, internal varistor component rapidly turns into low‑impedance state, absorbs surge energy and clamp voltage within safe range. After surge disappears, component returns to high‑impedance standby state.
Installation Requirements Mount base unit onto standard 35 mm DIN‑rail inside distribution cabinet. Insert surge module fully into base socket. Complete power‑circuit wiring following surge protection wiring specification.
Usage Notes Match device voltage rating with actual distribution system nominal voltage. Check status indicator periodically, replace module immediately after failure indication. Keep connecting conductors short to guarantee surge suppression effect.
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