The Hager SFT140 is a 1-pole modular changeover switch with a top common point and three switching positions (I-0-II), designed for controlled switching between two independent circuits or power sources. It mounts on a standard DIN rail and provides a clear mechanical and visual indication of the selected position.
Technical specifications:
- Part number: SFT140
- Manufacturer: Hager
- Type: Modular changeover switch, top common point
- Poles: 1P (single pole)
- Rated current: 40A
- Rated operational voltage: 230V AC, 50/60Hz
- Rated insulation voltage: 440V
- Switching positions: I-0-II (On-Off-On)
- Utilization category: AC21A / AC22A
- Short-circuit capacity: 0.60kA (with gl-gG fuses)
- IP rating: IP20 (IP2X with terminal covers)
- Wire cross-section: 1.5 to 16mm2 solid / 1.5 to 10mm2 flexible
- Tightening torque: 1.80 Nm
- Operating temperature: -20°C to 50°C
- Mechanical endurance: 200,000 cycles
- Electrical endurance: 25,000 cycles (AC21/AC22)
- Dimensions: 83mm (H) x 17.5mm (W) x 70mm (D), 1 module
- Mounting: DIN rail
Features and benefits:
- Three-position operation (I-0-II) allows safe isolation between two circuits with a neutral off position
- Green/red mechanical contact indication for instant visual status check
- Lockable in both extreme positions (requires accessory MZN175)
- Compact 1-module width saves panel space
- Top common point design simplifies wiring for generator transfer applications
Applications:
- Manual transfer switching between mains supply and backup generator
- Switching between two independent power circuits in distribution boards
- Source changeover in residential, commercial and industrial installations
- Main switching and isolation in consumer units
Compliant with IEC 60669-1 and IEC 60947-3. RoHS and REACh-SVHC compliant.
Also known as: Hager SFT140, 1P 40A changeover switch DIN rail, modular transfer switch 40A, I-0-II switch 1 pole 40A, generator changeover switch 40A.