A1210-B Crydom - Relays
A1210-B Description
The A1210-B from Crydom is a solid state relay. It is widely used for heater control, motor switching, lighting and process equipment where mechanical contacts would wear out.
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Summary of Features
Crydom A1210-B is a 10 A Series 1 120 VAC (Generation 3) panel-mount solid state relay, SCR output, normally closed (Form B) output, AC control (90-280 Vrms).
Target Applications
Crydom A1210-B is used for switching AC loads in industrial heating and temperature control (ovens, furnaces, plastic molding and extrusion machines), packaging and food processing equipment, lighting control, HVAC systems and industrial automation.
Key Specifications
Crydom A1210-B is a 10 A Series 1 120 VAC (Generation 3) panel-mount solid state relay, SCR output, normally closed (Form B) output, AC control (90-280 Vrms). Source: Crydom Series 1 120 VAC Generation 3 datasheet. Values at 25°C unless noted.
| Parameter | Value |
|---|---|
| Output | |
| Operating voltage (47-63 Hz) | 24-140 Vrms |
| Maximum load current | 10 Arms |
| Transient overvoltage | 400 Vpk |
| Minimum load current | 40 mArms |
| Maximum 1 cycle surge current (50/60 Hz) | 115/120 Apk |
| Maximum on-state voltage drop @ rated current | 1.6 Vpk |
| Maximum off-state leakage @ rated voltage | 8 mArms |
| Minimum off-state dv/dt | 500 V/µs |
| Thermal resistance junction to case (Rjc) | 1.48 °C/W |
| Maximum I²t for fusing (1/2 cycle, 50/60 Hz) | 66/60 A²s |
| Output | Normally closed (Form B) |
| Input | |
| Control voltage range | 90-280 Vrms |
| Turn-on / turn-off voltage | 90 Vrms / 10 Vrms |
| Typical input current | 2.0-4.0 mA |
| Nominal input impedance | 60 kOhm |
| General | |
| Dielectric strength, input/output/base | 4000 Vrms |
| Ambient operating temperature | -40 to 80°C |
| Weight (typical) | 3 oz (86.5 g) |
Technical document (PDF) | Request a quote for A1210-B (reply within 24 hours)

