Overview
The Crydom TA1225 is a panel-mount solid state relay (SSR) engineered for industrial AC load switching in automation and control systems. Manufactured by Sensata/Crydom (T Series), this relay combines the reliability of SCR output switching with zero-crossing detection to minimize electrical noise and extend load life. With a 25A continuous current rating and robust screw-clamp terminals, the TA1225 is ideal for heater control, motor soft-starters, and power management in industrial environments where precision and durability matter.
Key Features
- Zero-crossing switching for reduced EMI and extended load life on resistive applications
- 25A continuous output current at 24–140VAC rated for industrial duty
- Wide control voltage input: 90–280VAC (single-phase AC control)
- SPST-NO (Single Pole Single Throw, Normally Open) configuration
- Screw-clamp terminals for secure panel wiring
- Compact panel-mount form factor with 4000Vrms isolation
Technical Specifications
- Load Current (Continuous): 25A
- Output Voltage Range: 24–140VAC (AC load)
- Control Voltage Range: 90–280VAC (AC input)
- Switching Mode: Zero Crossing
- Contact Configuration: SPST-NO
- Isolation Voltage: 4000Vrms
- Relay Mounting: Panel Mount
- Terminals: Screw Clamp
- Product Series: T Series (Sensata/Crydom)
- SVHC Compliance: No SVHC (RoHS-compliant)
Typical Applications
- Electric heater and immersion water heater control
- Motor soft-starter circuits and AC load management
- Industrial oven and furnace temperature control
- Fan and blower speed regulation
- General-purpose AC switching in control panels and automation systems
Compatibility & Replacements
Compatible With
- Industrial control panels and PLC-based automation systems
- AC power distribution systems rated 90–280VAC control input
- Single-phase AC load switching circuits up to 140VAC, 25A
- HVAC and industrial process automation frameworks
Replaces / Drop-In Replacement For
- Crydom A1225 (earlier T Series designation; TA1225 is the current model numbering)
- Verify specific application compatibility with your system integrator before ordering to ensure proper control voltage and load specifications match your existing installation.
Works With
- AC control circuits and standard industrial relay sockets
- Single-phase AC power systems (50/60 Hz)
- Screw-terminal wiring and standard panel-mount cutout installations
- Industrial control systems and furnace/HVAC equipment using AC control logic
