The FTO 011 is a tamper-proof, normally closed thermostat with a fixed setting of 59°F switch-on and 77°F switch-off, designed for heater control or signal switching when temperature undershoots. It features a snap-action contact, clip mounting for 35 mm DIN rail, and a plastic housing compliant with UL94 V-0. Dimensions are 1.9 in height, 1.3 in width, and 1.3 in depth, with a weight of 1.1 oz. It supports switching capacities of 10 A at 120 VAC resistive and 2 A inductive, 5 A at 250 VAC resistive and 1.6 A inductive, and 30 W DC. The device handles a 16 A inrush current for 10 seconds, operates from -40 °F to 176 °F, and has a service life exceeding 100,000 cycles. Connections use a 2-pole clamp for 2.5 mm² (AWG 14) wire, with a maximum torque of 0.8 Nm.
Tamperproof (Pre-set) Thermostat NC (normally closed): Thermostat opens on temperature rise (red module housing) - for regulating heaters or for switching signal devices when temperature has fallen below the minimum value.
Tamperproof (Pre-set) Thermostat NO (normally open): Thermostat closes on temperature rise (blue module housing) - for regulating filter fans, heat exchangers, cooling devices or for switching signal devices when temperature limit has been exceeded.
Technical Data
| Sensor element | thermostatic bimetal |
|---|---|
| Contact type | snap-action contact |
| Service life | > 100,000 cycles |
| Max. switching capacity | 10 A resistive / 2 A inductive @ AC 120 V 5 A resistive / 1.6 A inductive @ AC 250 V DC 30 W |
| Max. inrush current | AC 16 A for 10 sec. |
| Connection | 2-pole terminal, clamping torque 0.8 Nm max.: solid/stranded 1 wire - AWG 14 max. (2.5 mm²) |
| Housing | plastic, UL 94V-0, light grey |
| Mounting | clip for 35 mm DIN rail, EN 60715 |
| Mounting position | variable |
| Operating / Storage temperature | -40 to +176 °F (-40 to +80 °C) / -49 to +176 °F (-45 to +80 °C) |
| Operating / Storage humidity | max. 90 %RH (non-condensing) |
| Dimensions | 1.85 x 1.3 x 1.3” (47 x 33 x 33 mm) |
| Weight | approx. 0.8 oz. (23 g) |
| Protection type | IP20 |
| Approvals | UL File No. E164102, VDE, EAC |
| STEGO | |
|---|---|
| Product Category | Thermal Switches and Thermal Protectors |
| Product Number | 01160.0-00 |
| Product Name | Tamperproof Thermostat FTO 011 / FTS 011 |
| Switch Type | Normally Open, NO; Normally Closed, NC |
| Set Point/ Switch Point | Multiple Set Points |
| Mounting/Configuration | Surface Mount |
| Maximum Current | 16 amps |
