3RT1926-2EC21

The 3RT1926-2EC21 is a dedicated solid-state auxiliary contact module with energization delay for Siemens SIRIUS 3RT10 series contactors. It has one set of normally closed and one set of normally open contacts, a rated current of 3A, a delay range of approximately 0.5 to 10 seconds, a control voltage of 100 to 127V AC, an IP20 protection rating, and is suitable for 110V control circuit motor control boxes.

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Siemens 3RT1926-2EC21 Power-on Delay Solid State Auxiliary Contact Module

Product Positioning

The 3RT1926-2EC21 is a solid-state energized delay auxiliary contact module specifically designed for Siemens SIRIUS large contactors. It is suitable for use in circuits with control voltages from 100 to 127V AC. After the coil is energized, the module switches contacts according to a set time delay, providing one set of normally closed and one set of normally open contacts for easy timing control or interlocking protection configuration.

Core Product Advantages and Features

On-Delay Function

The coil operates with a delay after being energized, making it suitable for timing control applications.

1NC+1NO contact combination

Provides one set of normally closed and one set of normally open contacts to meet diverse control logic requirements.

Delay range: 0.5~10 seconds

The delay time can be adjusted according to the on-site working conditions.

100~127V AC control voltage

Suitable for use with machines equipped with 110V control circuits.

IP20 protection rating

It has basic protection capabilities and is suitable for general distribution box environments.

Solid-state electronic structure

It operates stably and is more durable than traditional mechanical delay devices.

project	Specification
brand	Siemens
Product Series	SIRIUS 3RT10 / 3RT19 Accessories
model	3RT1926-2EC21
Product Type	Solid-state power-on delay auxiliary contact module
Contact configuration	1NC+1NO
Rated current	3A
Delay range	Approximately 0.5 to 10 seconds
Rated control voltage	100~127V AC
Protection level	IP20

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