Overview
The Keyence KV-U3 is a switching-type power supply unit engineered for Keyence KV Series programmable logic controllers and automation systems. This industrial-grade unit converts 100–240 VAC input to regulated 24 VDC output at 1.4A, delivering clean, stable power essential for PLC operation and peripheral devices in manufacturing and process control environments.
Key Features
- Switching-type topology for efficient power conversion
- Universal AC input: 100–240 VAC, 50/60 Hz (±10%)
- Stable regulated output: 24 VDC ±10% with low ripple (240 mVp-p max)
- 1.4 ampere continuous output current
- Compact profile with multiple screw terminal connections
- LED power indicator for visual confirmation
- Integrated cooling vents for thermal management
Technical Specifications
- Input Voltage: 100–240 VAC, 50/60 Hz ±10%
- Output Voltage: 24 VDC ±10%
- Output Current: 1.4 A continuous
- Ripple: 240 mVp-p maximum
- Type: Switching power supply
- Weight: Approximately 300 grams
- Terminals: Screw-type connectors for 100–240 VAC input and 24 VDC output
- Mounting: DIN rail or panel-mount compatible
- Protection: Built-in cooling vents on all sides
- Indicator: LED power light
Typical Applications
- Primary or backup power for Keyence KV-10, KV-16, KV-24, KV-40, KV-80 PLCs
- Powering KV Series expansion modules and I/O cards
- Industrial automation control cabinets requiring reliable 24 VDC distribution
- Machine vision systems and sensor networks in manufacturing facilities
- Process control systems where stable, regulated power is critical
Compatibility & Replacements
Compatible With
- Keyence KV-10, KV-16, KV-24, KV-40, KV-80 Series PLCs
- Keyence KV-8EX, KV-16EX expansion modules
- Keyence HMI and operator interface devices
- Industrial automation systems requiring 24 VDC supply
Replaces / Drop-In Replacement For
- Keyence KV-U2 (with voltage/current verification)
- Original equipment manufacturer (OEM) replacements for Keyence control systems
Works With
- Keyence KV Ladder Builder programming software
- Industrial automation cabinets using 24 VDC logic circuits
- Standard 24 VDC-powered relay logic, solenoids, and sensor networks
- Multi-phase automation installations where redundant or distributed power supplies are required






