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STEGO - PRODUCT CATALOGUE
TECHNICAL DATA
Switch temperature difference 4 K (±3 K tolerance)
Sensor element thermostatic bimetal
Contact type snap-action contact
Service life > 100,000 cycles
Max. switching capacity AC 250 V, 10 (2) A / AC 120 V, 15 (2) A
DC 30 W at DC 24 V to DC 72 V
Max. inrush current AC 16 A for 10 sec.
Connection 2-pole terminal, clamping torque 1 Nm max.:
rigid/stranded1 wire 2.5 mm² (AWG 14)
Mounting clip for 35 mm DIN rail, EN 60715
Casing plastic according to UL94V-0, light grey
Dimensions 70 x 33 x 42 mm
Weight approx. 50 g
Fitting position variable
Operating/Storage temperature -45 to +80 °C (-49 to +176 °F)
Operating/Storage humidity max. 90 % RH (non-condensing)
Protection type IP20
Approvals VDE, UL File No. E164102, EAC
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.
The mechanical thermostat is a two state regulator with small hysteresis. The setting wheel has an anti frost
assurance. The housing ensures an optimized air circulation around the bimetal.
STO 011: Thermostat (NC); contact breaker for regulating heaters. The contact opens when temperature is rising.
STS 011: Thermostat (NO); contact maker for regulating of filter fans and heat exchangers or for switching signal
devices when temperature limit has been exceeded. The contact closes when temperature is rising.
> Thumbwheel setting dial
> Small hysteresis
> High switching capacity
> Anti frost assurance
> Optimized housing for better air flow
The anti frost assurance is a symbol on
the setting scale of the NC thermostat
(STO 011) at +11 °C. This setting assures
closing of the switching contact before
0 °C.
Connection diagrams
Thermostat
STO 011 (NC)
Thermostat
STS 011 (NO)
Heater
Filter fan, Cooling equipment, Signal device Examples of connection
Thermostat
STO 011 (NC)
Heater Thermostat
STS 011 (NO)
e.g. Fan Thermostat
STS 011 (NO)
Signal device
min: 24 V; 20 mA
SMALL COMPACT THERMOSTAT
STO 011 / STS 011
Setting range Art. No. Contact breaker (NC) Art. No. Contact maker (NO)
0 to +60 °C 01115.0-00 01116.0-00
+32 to +140 °F 01115.9-00 01116.9-00
REGULATING
19.03.2019 | Specifications are subject to change without notice. Errors and omissions excepted. Suitability of this product for its intended use and any associated risks must be determined by the end customer/buyer in its final application. www.stego.de | www.stego.co.uk | www.stegonorden.se
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