
Siemens
- Available:
- 0 pcs.On RequestUpdated at: 05-09-2026
- Offer from:
Trusted supplier — Italy, member since 2021, 10–19 employees
- Warranty:
- 12 months
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The 3VA21 Motor Circuit Protector is designed to enhance electrical safety in low voltage applications. This device operates with a 63A current rating and provides exceptional short-circuit protection with a breaking capacity of 110kA at 415V. The integrated electronic trip unit, designated as ETU310M, allows for adjustable settings, enabling customized protection strategies.
With a 3-pole configuration, this circuit protector is suitable for various motor control applications, ensuring reliable operation under demanding conditions. The device features a clamp connection and is equipped with a steel wrap-around lug, facilitating secure installations. The compact dimensions of 4.1 x 7.1 x 4.2 inches (W x H x D) allow for easy integration into control cabinets.
Constructed to meet rigorous standards, the 3VA21 model is equipped with enhanced functionalities such as an integrated under voltage release and ground-fault monitoring. Its design supports DIN rail mounting, making it versatile for various setups.

Siemens
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Datasheet for Siemens 3VA2163-7MS36-0AA0, including specifications and features.
3D CAD model and technical drawings, ready for your design software.

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