The Schneider Electric Square D TVS4HEMA20A is a surge protective device engineered for robust protection in 480Y/277V, 3-phase, 3-wire electrical systems. This unit is part of the TVS series, designed to mitigate transient voltage events that can damage sensitive equipment in demanding commercial and industrial environments.

Technical details

• Series: TVS
• Configuration: 480Y/277V, 3-phase, 3-wire
• Peak Surge Current Rating: 200 kA
• Nominal Discharge Current Rating: 40 kA
• Maximum Continuous Operating Voltage (MCOV): 305 VAC (L-L)
• Protection Mode: L-L, L-G, L-N, N-G
• Operating Temperature Range: -40°C to 85°C
• Enclosure Type: NEMA 4X
• Indicator: Visual status indicator

Applications & compatibility

This surge protective device is suitable for protecting critical electrical infrastructure in facilities such as manufacturing plants, data centers, and commercial buildings. It is commonly integrated into main distribution panels, sub-panels, and point-of-use applications to safeguard motor control centers, HVAC systems, and sensitive electronic controls from damaging voltage spikes.

Available from Industrial Automation Co as new, refurbished, or surplus stock, backed by a 2-year warranty with same-day shipping on in-stock items. Request a quote for the Schneider Electric Square D TVS4HEMA20A or contact our technical team for cross-reference assistance with compatible TVS series components.