Overview
The Danfoss CI 9 690V is a 3-pole magnetic auxiliary contactor engineered for precise electrical load switching and motor control in industrial equipment. Part of the compact CI 6-15 frame range (2.2–7.5 kW), this contactor combines proven Danfoss reliability with compliance to IEC 60947-4-1 international standards. The 690V coil rating makes it suitable for high-voltage industrial systems requiring definite-purpose contactor functionality for safe, repeatable operation.
Key Features
- 3-pole normally-open (N.O.) main contacts for reliable load control
- Rated 25A AC-1 and 9A AC-3 per IEC 947-4-1 specifications
- 690V AC coil voltage (standard 50 Hz frequency)
- Compact screw or DIN rail mounting options
- Auxiliary contact blocks available for expanded control logic
- Durable construction suitable for marine, industrial, and OEM applications
Technical Specifications
- Manufacturer: Danfoss
- Model: CI 9
- Poles: 3-pole
- Main Contacts: 3 N.O.
- Rated Current AC-1: 25A
- Rated Current AC-3: 9A
- Coil Voltage 50 Hz: 690V AC
- Power Rating (AC-3): 4 kW @ 380–690V
- Impulse Withstand (Uimp): 8 kV
- Auxiliary Contacts: A600 type available
- Wire Temperature Rating: 60/75°C
- Standards Compliance: IEC 947-4-1, EN 60947-4-1
- Mounting: Screw or DIN rail
- Origin: Manufactured in Denmark
Typical Applications
The Danfoss CI 9 contactor is widely deployed in:
- Three-phase motor starting and load switching circuits
- Industrial machinery control panels and electrical distribution cabinets
- Marine and offshore automation systems
- HVAC and process equipment control
- Heavy-duty industrial reversing starters and soft-start circuits
- Auxiliary switching in larger contactor assemblies
Compatibility & Replacements
Compatible With
- Three-phase 690V AC industrial power systems (50 Hz)
- IEC 60947-4-1 compliant motor control circuits
- DIN rail and panel-mount electrical enclosures
- Auxiliary contact blocks (A600 series)
- Standard industrial motor starters and soft-start systems
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or controls engineer before ordering. The CI 9 frame is part of the Danfoss CI 6-15 family; equivalent third-party alternatives may exist but exact interchangeability requires detailed specification review.
Works With
- IEC 60947-4-1 / EN 60947-4-1 rated systems
- Danfoss auxiliary contact block modules (CB series)
- Standard three-phase industrial control systems
- Timer and overload relay assemblies in motor-control centers
- BV (Bureau Veritas), DNV, and LR approved systems
