ABB KTS 011 | Normally Open Cabinet Thermostat

Description

• Model: KTS 011 / KTS011
• Brand: ABB
• Part Type: Normally open mechanical thermostat
• Function: Controls filter fans, heat exchangers, or signal devices when the temperature reaches the set point
• Installation: 35 mm DIN rail mounting
• Switching Differential: 7 K with ±4 K tolerance

Technical Introduction

The ABB KTS 011 is a compact normally open mechanical thermostat designed for temperature-dependent switching inside electrical control cabinets and enclosures.

Its operating principle is straightforward: a thermostatic bimetal element changes the contact state when the configured temperature is reached. In typical cabinet applications, the KTS 011 is used to start a filter fan or heat exchanger, or to switch a signaling circuit when the enclosure temperature exceeds the set point. The KTS 011 is the normally open counterpart to the KTO 011 heater-control thermostat.

Best Suited For

• PLC and DCS control cabinets
• Filter fan and heat-exchanger control
• Electrical enclosure temperature signaling

Core Technical Specifications

ABB KTS 011

Specifications above are based on available KTS 011 technical references; verify the exact catalog variant before applying ratings to a safety- or process-critical installation.

Field Engineer’s Tech Notes

1. KTS 011 is a normally open contact maker.
It is intended to close when the temperature rises to the configured switching point, commonly starting a cabinet fan or heat exchanger. Do not substitute a KTO 011 without checking the required contact logic; KTO 011 is the normally closed variant used for heater control.

2. Check the actual switching load, not just the voltage.
The published ratings differ by AC/DC operating condition. When driving a fan, relay coil, or other inductive load, verify the applicable current and switching category against the OEM data. A control circuit that is acceptable at one voltage may not have the same allowable switching current at another.

Adaptive QA & Testing Protocol

Incoming inspection checks the KTS 011 identification, housing condition, terminal integrity, mounting clip, and thermostat adjustment mechanism. The contact is then checked with a multimeter to confirm the expected normally open state at ambient conditions.

For functional verification, the thermostat is exposed to a controlled temperature increase while monitoring contact continuity. The switching point and approximately 7 K switching differential are checked against the applicable specification. Where the intended application is a cabinet fan or heat exchanger, the complete control circuit can also be verified under the rated load.

Inspection photographs, test reports, and available test videos can be provided upon request.

Buyer’s FAQ

What is the difference between ABB KTS 011 and KTO 011?

KTS 011 is normally open (NO) and is commonly used to activate filter fans, heat exchangers, or signaling circuits as temperature rises. KTO 011 is normally closed (NC) and is typically used for heater control.

Can KTS 011 replace another cabinet thermostat?

Only when the contact logic, temperature range, switching capacity, mounting arrangement, and connection configuration match. Confirm the complete application before approving a substitution.

Is KTS 011 suitable for PLC or DCS cabinets?

Yes. Its compact DIN-rail format and temperature-operated contact make it suitable for cabinet thermal management circuits, including fan and heat-exchanger control.

What condition and warranty are available?

Inventory may be offered as new, New Surplus (NSFP), or refurbished depending on stock. Confirm the actual condition, test status, warranty period, and lead time before issuing the purchase order.