Square D TeSys Deca Auxiliary Contact Block — 4NC, Front Mounting
The Square D LADN04 is a TeSys Deca auxiliary contact block providing four normally closed (4NC) contacts for control circuit interlocking and signaling. Designed for front mounting with snap attachment on TeSys D series contactors, it offers a compact, tool-free installation method with screw clamp terminal connections.
Product Details
- Series: TeSys D
- Contacts: 4NC (Normally Closed)
- Mounting: Front
- Attachment: Snap
- Connection Type: Screw Clamp Terminals
- Color: Dark Gray
- Model: LADN04
- UPC: 78590121367
Features
- 4NC contact configuration for interlocking and safety circuits
- Front snap mounting for quick, tool-free attachment to TeSys D contactors
- Screw clamp terminals for reliable, vibration-resistant wiring
- Compact design minimizes panel space
Applications
Used in motor starters and control panels to add normally closed signaling and interlocking contacts to TeSys D series contactors. Common applications include PLC input circuits, indicator light control, and safety interlock schemes in industrial automation and motor control centers.





