? Description:

The ABB auxiliary contact block (typically HKS4-11 or HK4-11) is a modular accessory designed to be attached to the MMS-495 manual motor starter. It provides additional 1 Normally Open (NO) + 1 Normally Closed (NC) contacts for external control and signaling purposes. It is engineered to be compact, durable, and easy to install.

?️ Application:

Used in motor control centers, industrial automation systems, and electrical panels, the auxiliary contact block allows remote status indication (such as ON, OFF, or TRIPPED) and supports interlocking functions in automated processes.

? Objective:

To extend the functionality of the MMS-495 by providing auxiliary contacts that integrate into control logic, monitoring systems, alarms, or interlocks—enhancing safety and automation capabilities.

✅ Key Features:

• Contact Type:
  – 1 NO + 1 NC
  – Other variants like 2 NO or 2 NC are also available

• Mounting:
  – Snap-on design for side or front mounting
  – No tools required for installation

• Electrical Ratings:
  – Voltage: Up to 690 V AC
  – Current: Up to 6 A (AC-15 utilization category)

• Build & Durability:
  – Mechanical life of over 100,000 operations
  – Compact size, space-saving design
  – IP20 finger-safe terminals

• Connection Type:
  – Screw-type terminal for secure and easy wiring

• Compliance & Safety:
  – Conforms to IEC/EN 60947-5-1
  – CE, UL, and CSA certified