F&F CR-810DUO – PTC resistive relay for thermal protection of motors and transformers
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Description
F&F CR-810DUO – PTC resistive relay for thermal protection of motors and transformers
F&F CR-810DUO is a resistive relay designed for the thermal protection of electric motors, transformers and other equipment exposed to overheating. It works with PTC sensors – up to 6 sensors can be connected simultaneously, enabling multi-point temperature monitoring within a single circuit.
The device responds to a rapid increase in the resistance of the PTC sensor, which occurs when the permissible temperature of the protected components is exceeded. Relay activation is signalled by a red LED, and the 1NO/NC output contact allows the load to be switched off directly or an alarm signal to be sent to the controller.
The relay has a universal power supply – 24 V DC or 230 V AC – allowing it to be used both in low-voltage control circuits and in standard industrial switchboards. Its 1-module housing designed for DIN rail mounting ensures compact installation in control cabinets and electrical switchboards.
Applications
- Thermal protection of electric motors and pumps
- Protection of transformers against winding overheating
- Temperature monitoring in control cabinets and switchboards
- Thermal protection of industrial equipment with PTC sensors
Technical specification
| Parameter | Value |
|---|---|
| Manufacturer | F&F |
| Model | CR-810DUO |
| Function | resistive relay (thermal PTC) |
| AC supply voltage | 230 V |
| DC supply voltage | 24 V |
| Rated current (In) | 16 A |
| Contact type | 1NO/NC |
| Number of contacts | 1 |
| Contact separation | yes |
| Maximum number of PTC sensors | 6 |
| Signalling | red LED |
| Mounting | DIN rail |
| Width (modules) | 1 module |
| Protection rating | IP20 |
| Weight | 0.074 kg |
| EAN | 5908312595519 |
Files to download:
Technical data
| Device Type | resistance relay |
| Rated current [A] | 16A |
| Contact configuration | 1NO/NC |
| Coil voltage [V] | 230V AC |
| Brand | F&F FILIPOWSKI |