USD 32.34
Type 2 surge protection plug featuring a high-capacity MOV, 40kA max discharge current, and optical fault warning. Protects 230VAC systems in <25ns.
The Phoenix Contact 2798844 (VAL-MS 230 ST) is a Type 2 replacement surge protection plug designed to safeguard industrial control systems and power supplies from transient overvoltages. Featuring a high-capacity Metal Oxide Varistor (MOV) with integral thermal monitoring, it provides a maximum discharge capacity of 40 kA and a swift response time of under 25 nanoseconds. Designed for plug-and-play integration with VAL-MS series base elements, it incorporates an optical status indicator for rapid fault diagnosis and offers an industry-standard 17.5 mm width to minimize DIN-rail footprint.
| Parameter | Value |
|---|---|
| Rated Voltage (AC) | 230 V AC |
| Maximum Continuous Operating Voltage (MCOV) | 275 V AC |
| Maximum Discharge Current (Imax) | 40 kA |
| Nominal Discharge Current (In) | 20 kA |
| Response Time | ≤ 25 ns |
| IEC Test Classification | II / T2 |
| Connection Method | Pluggable |
| Degree of Protection | IP20 |
| Flammability Rating | UL 94 V-0 |
| Width | 17.5 mm |
| Height | 52.4 mm |
| Depth | 55.3 mm |
Protects sensitive Programmable Logic Controllers (PLCs) and HMI interfaces within industrial automation cabinets by suppressing voltage spikes on the 230VAC supply line.
Prevents logic corruption and catastrophic failure of 24VDC power supply inputs caused by grid switching transients or distant lightning strikes.
Installed at the branch level in MCCs to clamp voltage surges generated by inductive load switching and variable frequency drive (VFD) operations on TN/TT grids.
Isolates and mitigates high-energy spikes (up to 275VAC MCOV) that cause premature degradation of semiconductor components in motor drives and contactor logic.
Guards auxiliary 230V utility interfaces and monitoring systems in solar or wind power installations against damaging overvoltages using easily replaceable pluggable protection modules.
Reduces downtime and maintenance costs by absorbing up to 40kA surges and clearly indicating when a module has failed via the built-in optical visual status flag.
