ABB Auxiliary Contact Block, 2 Contact, 1 NO/1 NC, 1SBN01, Side, 4 A, 690V, 1SBN011421R1008

This auxiliary contact Block provides auxiliary switching for control and signalling circuits in electrical and automation systems. Fitted to the side of compatible devices, it offers a Compact means to add additional contacts for status monitoring or interlocking within control panels and machinery. Its configuration suits integration where small ancillary currents and clear change-of-state indication are required.

• 1NO1NC configuration for combined make and break feedback
• Rated insulation voltage 600V enabling moderate-voltage applications
• Contact current 4A for low-power switching tasks
• Operational current Ie 2A for reliable control circuit performance
• Mechanical durability 10Mcycles for extended operational life
• Screw terminals for secure, maintenance-friendly connections

• Suitable for interlock signalling in motor starters and contactors
• Ideal for control-logic feedback in automated assembly lines
• Used with control relays for PLC input expansion
• Can be used for safety indication circuits in switchgear
• Suitable for retrofitting side-mounted contact monitoring

It attaches via a side-mount arrangement designed to fasten to the lateral Interface of compatible contactors or modular devices, allowing straightforward addition without altering the primary device footprint.

The unit uses screw-type terminals to accept conductor connections, facilitating firm clamping and straightforward field wiring and replacement.

Contacts are rated for a maximum switching current of 4A while the assigned operational current parameter is 2A, making it suitable for signalling and low-power control functions.

It meets recognised UL and CSA ratings identified as A600 Q300, indicating conformity with specified North American contact performance categories.