Schneider Electric SSP1A125BDT Harmony SSP1 25A Panel Mount 3-32V DC In 24-300V AC Out Solid State Relay

The Schneider Electric SSP1A125BDT is a Harmony SSP1 panel-mount solid state relay rated 25 A with zero-voltage switching, a 3-32 V DC control input, and a 24-300 V AC load output. It ships with a thermal pad for heatsink mounting, switches loads up to 1 hp at 240 V AC, and carries an IP20 rating.

Technical Specifications

Certifications & Standards

• EAC
• CE
• UL
• CSA
• UL 508
• IEC 60950-1
• IEC 62314
• CSA C22.2 No 14-13

Selection Notes

SSP1A125BDT is the panel-mount form of the Harmony SSR line, bolting to a heatsink with the supplied thermal pad rather than clipping onto a DIN rail. At 25 A/24-300 V AC output, it fits motor loads up to 1 hp at 240 V AC. The thermal pad (0.48 C-in2/W impedance) is sized for the relay's 0.8 C/W junction-to-case resistance, so the heatsink itself needs to handle continuous 25 A dissipation to hold the on-state voltage drop near the datasheet's <1.15 V figure. Compare against the 50 A SSP1 part when higher load current is needed in the same panel-mount footprint.