Front auxiliary contacts for contactors 2xNO 2xNC UA-4 2a2b UA-4 2A2B

Auxiliary contacts for contactors – reliable extension of functionality

Auxiliary contacts UA-4 2A2B by Aniro are components designed to work with contactors, expanding their control and signaling capabilities. They allow for the implementation of additional auxiliary circuits, essential in advanced automation and control applications. Thanks to their construction and parameters, they are a solid and effective solution for both professional installers and end-users.

Construction and application

Auxiliary contact UA-4 2A2B is characterized by a 2xNO (normally open) and 2xNC (normally closed) configuration. This means it has two independent circuits that can be used for various purposes – from signaling the contactor status to controlling other elements of the system. They are mounted frontally on the contactor, which ensures easy access and convenience during installation and maintenance. They find wide application in:

• Industrial automation – control of machines and devices.
• Electrical switchboards – signaling the status of circuits.
• Lighting systems – controlling groups of receivers.
• Heating applications – controlling the operation of heaters and furnaces.
• HVAC systems – managing the operation of fans and air conditioners.

Key features and benefits

• Contact configuration allows for the implementation of various functions without the need for additional relays or intermediate elements - it has two normally open (NO) and two normally closed (NC) contacts.
• Frontal mounting facilitates installation and servicing, especially in tight switchboard spaces. Quick access to the contacts allows for efficient diagnostics and replacement if necessary.
• The durability and reliability of Aniro products translate into a long service life and trouble-free operation in demanding industrial conditions.
• Protection degree IP20 provides basic protection against accidental contact and against the ingress of solid objects larger than 12.5 mm.
• Compatibility with a wide range of contactors facilitates integration with existing automation systems.

Additionally, the lack of possibility of additional equipment means simplicity of construction and lack of unnecessary elements, which translates into greater reliability of operation.