The Schneider Electric Square D TVS4HEMA20S Surge Protective Device (SPD) is engineered to protect 480Y/277V electrical systems from transient overvoltages. This device is part of the TVS series, designed for robust industrial environments where reliable power quality is critical for continuous operation of sensitive equipment.

Technical details

• Series: TVS
• System Voltage: 480Y/277V AC
• Protection Modes: L-N, L-G, L-L, N-G
• Nominal Discharge Current (In): 20 kA
• Maximum Discharge Current (Imax): 50 kA
• Voltage Protection Rating (Up): 1500V (L-N), 1500V (L-L), 1500V (L-G), 1500V (N-G)
• Short-Circuit Current Rating (SCCR): 200 kA
• Connection Type: Hardwired

Applications & compatibility

This surge protective device is suitable for installation in main electrical panels, sub-panels, and point-of-use applications within manufacturing facilities, data centers, and commercial buildings. It is commonly employed to protect motor control centers (MCCs), variable frequency drives (VFDs), programmable logic controllers (PLCs), and other critical control systems from damaging voltage surges and lightning-induced transients.

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 TVS4HEMA20S or contact our technical team for cross-reference assistance with compatible surge protection solutions.