Overview
The Furnas 49D22125001 auxiliary interlock kit is a contactor accessory that provides normally open (1NO) contact blocks for enhanced interlocking capability in industrial electrical control systems. Each kit contains 1 N.O. interlock and 1 mounting screw, making it a straightforward drop-in addition to Furnas contactors. This lot offers five complete units for bulk installation or replacement needs.
Key Features
- Normally Open Contact: Single 1 N.O. interlock configuration for standard auxiliary control requirements
- Voltage Rating: Rated for 600 V.AC operation
- Complete Assembly: Includes mounting hardware for direct installation
- Compact Form Factor: Lightweight design enables flexible mounting in control enclosures
- Multiple Units: Lot of 5 kits for economy in bulk upgrades or spares inventory
Technical Specifications
The Furnas 49D22125001 is engineered to industry standards for reliable auxiliary switching in contactor circuits:
- Contact Configuration: 1 Normally Open (1NO)
- Voltage Rating: 600V AC
- Contact Type: Auxiliary interlock contact block
- Mounting: Screw-mounted to contactor frame
- Series Compatibility: Furnas standard and Innova Plus contactors (sizes 00–3½)
- Certifications: UL certified
- Weight per Unit: Approximately 50 grams
- Quantity: Lot of 5 kits
Typical Applications
Auxiliary interlock kits are essential in industrial control for:
- Expanding contact configurations on existing contactors without full replacement
- Adding interlocking logic between multiple motor or load circuits
- Implementing safety sequences and anti-parallel protection in reversing starters
- Emergency stop (E-stop) signaling and permissive control circuits
- Diagnostic and status indication in control panels
Compatibility & Replacements
Compatible With
- Furnas standard series contactors (all sizes)
- Innova Plus series, specifically sizes 00 through 3½
- Furnas 3A series contactors
- Standard contactor control circuits requiring 600V AC auxiliary contacts
Replaces / Drop-In Replacement For
- Furnas 3A091 (Siemens Part Number 49D22125001)
- Original equipment manufacturer interlock kits for Furnas contactors
- Worn or failed auxiliary contact blocks on existing Furnas installations
Works With
- Furnas contactor mounting and DIN rail enclosure systems
- 24VDC, 120VAC, and 240VAC control transformer circuits
- Standard industrial control relay logic and PLC input circuits
- Motor starter and lighting contactor control schemes
