CHINT Side Mount Auxiliary Contact 1NO+1NC (NS2-25)

• The CHINT AUX-NS2-25-AU11 is a side-mounting auxiliary contact block designed specifically for use with the NS2-25 series manual motor starters.
• It provides one Normally Open (1NO) and one Normally Closed (1NC) contact that operate in sync with the starter's main contacts.
• This accessory allows for easy integration of the starter's status into control circuits for remote signaling, interlocking, or other automation functions.

Features

• Contact Configuration: 1NO + 1NC

• Mounting Type: Side Mount (Left side of starter)

• Compatibility: Designed for NS2-25 and NS2-32 series motor starters (often referred to generically as NS2-AU11 in datasheets)

• Easy Snap-On Installation

• Provides Electrically Isolated Contacts

Benefits

• Remote Status Indication: Allows external circuits (e.g., indicator lights, PLC inputs) to monitor whether the motor starter is ON or OFF.

• Control Circuit Interlocking: Enables safety or sequence logic by preventing or allowing other operations based on the starter's state.

• Enhanced Automation: Facilitates integration of the manual starter into more complex control systems.

• Clear Contact State: Provides both NO and NC contacts for versatile signaling options.

Technical Specifications

• Model: AUX-NS2-25-AU11

• Contact Configuration: 1 Normally Open + 1 Normally Closed

• Rated Insulation Voltage (Ui): 690V

• Conventional Thermal Current (Ith): 6A

• Rated Impulse Withstand Voltage (Uimp): 4kV

• Rated Operational Current (Ie) & Voltage (Ue):

  • AC-15:

    • 3.3A @ 230/240V

    • 2.2A @ 380/415V

    • 1.5A @ 440V

    • 1A @ 500V

    • 0.6A @ 690V

  • DC-13:

    • 0.5A @ 220V

    • 1.3A @ 110V

    • 3A @ 60V

    • 5A @ 48V

    • 6A @ 24V

• Terminal Markings (Typical for NS2-AU11): (73)43-44(74) for NO, (61)31-32(62) for NC

• Standards: Conforms to auxiliary contact requirements within IEC/EN 60947 standards.

Ideal Use

• Control panels requiring feedback on motor starter status.

• Applications needing interlocking between the motor starter and other devices.

• Adding signaling capabilities (e.g., run/stop lights) to a manual motor starter installation.

• Integrating NS2-25 starters with PLC or relay logic systems.

Tips

• Installation: Ensure the main starter is de-energized before installation. Align the auxiliary contact block with the side mounting slots on the NS2-25 starter and push firmly until it clicks into place (refer to assembly diagrams like Figure 5 or Figure 10 in starter manuals).

• Wiring: Connect control circuit wires to the appropriate terminals (e.g., 43-44 for NO, 31-32 for NC). Use appropriate wire size and ensure terminals are tightened securely.

• Compatibility: Verify this accessory (AU11 type) is suitable for your specific NS2 starter model (primarily NS2-25, NS2-25X, NS2-32, NS2-32X, NS2-32H). While labeled AUX-NS2-25-AU11, the core component is often the generic NS2-AU11.

• Testing: After installation, manually operate the starter (if safe to do so without load) and verify the auxiliary contacts change state correctly using a continuity tester.