Danfoss RT123E mechanical temperature switch (thermostat) with remote bulb and SPDT, gold-plated; intrinsically safe contact, auto reset. Sensor setting range 150 to 250; differential 1.8 to 9 degC (adjustable); enclosure IP66. For industrial and marine refrigeration and HVAC applications. Danfoss code number 017-521666; EAN 5702423245284.
| Brand | Danfoss |
| Model | RT123E thermostat |
| Code number | 017-521666 |
| Sensor temperature setting range | 150 to 250 |
| Differential | 1.8 to 9 degC (adjustable) |
| Contact function | SPDT, gold-plated; intrinsically safe |
| Reset | Auto |
| Sensor type | remote bulb, sensor 9.5 x 110 mm |
| Capillary tube length | 2000 mm (2 m) |
| Max. sensor temperature | 300 degC |
| Enclosure | IP66 |
| Ambient temperature range | -50 to +70 degC |
| Cable entry | 2 x Pg 13.5 |
| Contact rating | AC15=3 A, 400 V; AC1=10 A, 400 V; AC3=4 A, 400 V; DC13=12 W, 220 V; LR=28 A, 400 V |
| Standards | EN 60947-4, EN 60947-5 |
| Approvals | ATEX II 2G Ex ia, CE, EAC, LLC CDC EURO-TYSK, RMRS, RoHS, RoHS China, TYSK |
| EAN | 5702423245284 |
| Part number | 017-521666 |
| Net weight | 0.974 Kilogram |
| Type | RT123E |
| Product group | Switches and thermostats |
| Ambient temperature range [°C] [max] | 65 °C |
| Ambient temperature range [°C] [min] | -20 °C |
| Ambient temperature range [°F] [max] | 149 °F |
| Ambient temperature range [°F] [min] | -4 °F |
| Approval | ATEX - Cat. 2 - Zone 1 |
| Cap. tube length fraction [in] | 78 3/4 in |
| Capillary tube length [mm] | 2000 mm |
| CE mark | Yes |
| Charge type | Partial |
| China RoHS compliance | Yes |
| Diff. @ Max. range setting[°C] [max] | 9 °C |
| Diff. @ Max. range setting[°C] [min] | 1.8 °C |
| Diff. @ Min. range setting[°C] [max] | 30 °C |
| Diff. @ Min. range setting[°C] [min] | 6.5 °C |
| Differential type | Adjustable |
| Electrical conn | |
| Male/Female | Female |
| Electrical connection | Screwed cable entry |
| Electrical connection size | 2xPg 13.5 |
| Electrical connection standard | DIN 40430 |
| Electrical spec. standard | EN 60947-4/-5 |
| EN 60947 electrical properties | Insulation: 400V |
| EN 60947 wiring properties | Flex, ferrules: 0.2-1.5 mm2 |
| Enclosure rating IP | IP66 |
| EU RoHS compliance | Out of scope |
| EX Sales text | -20C<ta<+65C |
| Max. sensor temperature [°C] | 300 °C |
| Max. sensor temperature [°F] | 572 °F |
| REACH Candidate List substances | Lead (CAS no. 7439-92-1) |
| Reset function | Auto |
| Sensor size (Ø x L) [in] | 3/8 x 4 1/4 in |
| Sensor size (Ø x L) [mm] | 9.5 x 110 mm |
| Temperature range [°C] [max] | 250 °C |
| Temperature range [°C] [min] | 150 °C |
| Temperature range [°F] [max] | 482 °F |
| Temperature range [°F] [min] | 302 °F |
| Material | Remote bulb |
| Temperature range | -50 to +70 degC (ambient); sensor 150 to 250 degC |
| IP rating | IP66 |
| Primary standard | EN 60947-5 |
| MOQ | 1 |
RT123E remote bulb thermostat, 2 m capillary. Confirm setting range, reset type and sensor/capillary length against application.