Robertshaw STXH240S05 | Split Phase Surge Protector, 240/120V

The Robertshaw STXH240S05 Split Phase Surge Protector delivers compact, high-performance surge protection for residential and light commercial 120/240VAC systems. Designed for direct mounting to AC disconnect switches, it features TPMOV technology for maximum safety, a NEMA 4X enclosure for indoor/outdoor use, and an LED status indicator for at-a-glance diagnostics. UL 1449 5th Edition compliant and ideal for HVAC applications, it supports both Type 1 and Type 2 SPD installations with 3-mode surge protection.

Technical Specifications:

• Configuration: Split Phase
• Voltage (V): 240/120 VAC
• Modes of Protection: 3 (L-N, L-L)
• Mounting Style: 1/2" – 14 threaded hub (fits 1/2" knockouts)
• Lead Length: 18"
• Operating and Storage Temperature: -40 to 85
• Enclosure Rating: NEMA 4X (Indoor/Outdoor Use)
• LED Status Indicator: ON = Good, OFF = Replace
• Compliance: UL 1449 5th Edition
• Application: ANSI/UL Type 1 or 2 SPD installations