Overview
The Phoenix Contact VAL-MS 230 ST is a Type 2 surge protection connector designed for industrial automation and control systems requiring high-capacity surge suppression. Operating at 275VAC, this plug-in arrester combines varistor technology with thermal and fault monitoring to protect sensitive control circuitry from transient overvoltages.
Key Features
- Type 2 surge protective device classification
- High-capacity varistor for reliable surge suppression
- Thermal monitoring with automatic disconnection on fault
- Visual fault warning indicator
- Plug-in design for VAL-MS base elements
- Compact DIN-rail mounting compatibility
Technical Specifications
- Rated Voltage: 230 V AC nominal (275 V AC design)
- Nominal Discharge Current (In): 20 kA
- Maximum Discharge Current (Imax): 40 kA
- Voltage Protection Level (Up): 1.35 kV
- Mounting: DIN-rail (NS 35/7.5)
- Design: Single-channel plug-in arrester
- Weight: 110 g
- Certification: Type 2 per IEC/EN 61643-11
Typical Applications
- Motor control circuits and drive systems
- PLC and automation equipment protection
- Switchboard and distribution panel surge protection
- Industrial communication line conditioning
- Lightning and switching transient suppression
Compatibility & Replacements
Compatible With
- VAL-MS base element mount systems (NS 35/7.5 rail)
- Industrial control cabinets and switchboards
- Standard three-phase and single-phase AC circuits
- Phoenix Contact surge protection ecosystems
Replaces / Drop-In Replacement For
- Phoenix Contact VAL-MS 230 (single-channel base configuration)
- Similar Type 2 surge arresters in 230V AC applications
- Verify compatibility with your system integrator before ordering
Works With
- DIN-rail mounted control systems (IEC 61439)
- Industrial Ethernet and hardwired control circuits
- AC distribution systems 50/60 Hz
- Standard three-phase motor starters and VFDs
