The ST 011 thermostat is an SPST regulator with small hysteresis. The housing design ensures optimized air
circulation around the sensor element.
Thermostat NC (normally closed): Thermostat opens on temperature rise (red thumbwheel) – for regulating
heaters or for switching signal devices when temperature has fallen below the minimum value.
Thermostat NO (normally open): Thermostat closes on temperature rise (blue thumbwheel) – for regulating filter
fans, heat exchangers, cooling devices or for switching signal devices when temperature limit has been exceeded.
> Adjustable thumbwheel setting
> Compact design
> Small hysteresis
> High switching capacity
> DIN rail mountable
Enclosure heater
Filter fan, cooling equipment, signal device
COMPACT THUMBWHEEL THERMOSTAT
STO 011 / STS 011
Convenient minimum setpoint
symbol on the NC thermostat to assure
enclosure temperature remains above
freezing.
NC (red) NC (blue)
HeaterThermostat
STO 011
Thermostat
STS 011
e.g. Fan Thermostat
STS 011
e.g. Signal Device
min: 24 V; 20 mA
Part No. (NC) Part No. (NO) Setting range
01115.9-00 01116.9-00 +32 to +140 °F
01115.0-00 01116.0-00 0 to +60 °C
TECHNICAL DATA
Switching difference 7 °F (4 K) ± 5.4 °F (3 K) tolerance
Sensor element thermostatic bimetal
Contact type snap-action contact
Service life > 100,000 cycles
Max. switching capacity 15 A resistive / 2 A inductive @ AC 120 V
10 A resistive / 2 A inductive @ AC 250 V
DC 30 W (DC 24-72 V)
Max. inrush current AC 16 A for 10 sec.
Connection 2-pole terminal, clamping torque 1 Nm max.:
solid/stranded1 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 vertical
Operating / Storage temperature -49 to +176 °F (-45 to +80 °C)
Operating / Storage humidity max. 95 %RH (non-condensing)
Dimensions 2.76 x 1.3 x 1.65” (70 x 33 x 42 mm)
Weight approx. 1.8 oz. (50 g)
Protection type IP20
Approvals UL File No. E164102, VDE, GOST-R
¹ When connecting with stranded wires, wire end ferrules must be used.
Important note: The contact system of the regulator is subjected to environmental influences, thus the contact resistance
may change. This can lead to a voltage drop and/or self-heating of the contacts.
Wiring
examples
www.stegousa.com08.08.2014 | Specifications are subject to change without notice. Suitability of this product for its intended use and any associated risks must be determined by the end customer/buyer in its final application.
Toll free: 1-888-783-4611 (US & Canada only) · www.stegousa.com
