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High Performance PLC Expansion Module VSSC4 RC24VAC/DC

VSSC4 RC24VAC/DC is a compact 4-channel pluggable surge suppression module from Weidmüller VSSC series, designed to protect industrial AC/DC control signal circuits against transient voltage surges, switching spikes and inductive back EMF generated by solenoid valves, contactors and relays.

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Specifications Nominal operating voltage range: 24 V AC / 24 V DC Max continuous allowable voltage: 30 V AC / 30 V DC Channel quantity: 4 independent parallel RC snubber channels RC circuit single channel parameters: Series resistance: 100 Ω Capacitance: 0.1 µF Max switching current per channel: ≤ 1 A (for relay/solenoid coils) Surge suppression function: Absorbs inductive back EMF voltage peaks up to 1000V No standby power consumption, passive component circuit No signal leakage or bias interference for low-current control loops Connection Mechanical Specs Terminal type: PUSH-IN spring-cage tool-free terminals Applicable wire cross-section: Solid wire 0.2–2.5 mm², multi-strand wire 0.2–1.5 mm² Recommended wire stripping length: 7–8 mm Mechanical & Dimension Specs Mounting standard: TS35 top hat DIN rail snap installation Overall dimensions (W × H × D): 6.4 mm × 74.4 mm × 55 mm Net weight: ~28 g Housing material: Black UL94 V-0 flame-retardant PA66 plastic Protection class: IP20 (only installed inside control cabinet) Vibration resistance: 10–55 Hz, 1.5 mm amplitude per IEC 60068-2-6 Environmental Conditions Operating ambient temperature: -20 °C ~ +60 °C Storage & transport temperature: -40 °C ~ +70 °C Relative humidity: 5%–93% RH, non-condensing at 40°C Max operating altitude: ≤ 2000 m above sea level Compliance & Certifications Markings: CE marked Environmental compliance: RoHS 2011/65/EU, REACH SVHC registered EMC standard compliance: EN 61326-1 industrial control equipment immunity standard