Siemens
Siemens 3TA21-12-5A Auxiliary Contactor - 4NO
Siemens 3TA21-12-5A auxiliary contactor with 4 NO contacts.
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12-Mo Warranty
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12-month warranty
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Same-day dispatch
Order by 2pm CST
Worldwide delivery
US, EU, Asia, Middle East
Veteran-owned
CAGE: 9NK75
4 Normally Open (NO) contacts
Reliable auxiliary switching
Compact design
Genuine Siemens part
Industrial grade
Product description
The Siemens 3TA21-12-5A is an auxiliary contactor featuring four normally open (NO) contacts. It is designed for auxiliary control functions, providing additional switching capabilities in electrical control systems.
This contactor is suitable for use in industrial control panels, motor control circuits, and automation systems where reliable supplementary switching is needed. Its 4NO configuration offers flexibility for various control logic applications.
Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, offers the Siemens 3TA21-12-5A. We provide dependable components to keep your operations running smoothly and efficiently.
Technical specifications
| Contacts | 4 NO |
| Type | Auxiliary Contactor |
| Manufacturer | Siemens |
Common applications
Industrial Control Panels
Motor Control
Automation Systems
Electrical Distribution
Relay Logic
Compatible systems
Control systems requiring auxiliary switching with 4 NO contacts
Also known as
Siemens 3TA21 auxiliary contactor
3TA21-12-5A relay
Replaces / compatible with
This auxiliary contactor is designed to supplement primary contactors or switches in control circuits.
Technical note
Expert tip
Ensure the coil voltage of the 3TA21-12-5A matches your control system's power supply before installation.What happens next?
1
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2
Account manager assigned
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3
Your quote delivered
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Frequently asked questions
What type of contacts does the Siemens 3TA21-12-5A feature?
The Siemens 3TA21-12-5A is an auxiliary contactor equipped with four normally open (NO) contacts. These contacts are closed when the coil is energized, allowing for additional control circuit functions.