CA-U4 | Keyence 24 VDC Ultra-Compact Switch-Mode Power Supply, 6.5 A Output
Keyence · Relays, Contactors & Switches
Description The Keyence CA-U4 is an ultra-compact 24 VDC switch-mode power supply designed to deliver stable DC output for industrial automation and vision systems. With universal input compatibility and high efficiency, the CA-U4 ensures reliable power delivery for sensors, controllers, and equipment operating under demanding factory conditions. Technical Specifications Condition New/Never Used Surplus Brand Keyence Category Power Supplies Part Number CA-U4 Subcategory Power Supply Type 24 VDC Switch-Mode Power Supply Rated Input Voltage 85 to 264 VAC, 47–63 Hz / 110 to 370 VDC Rated Input Current 2.2 A or less (100 VAC) / 1.1 A or less (200 VAC) Efficiency 82% (100 VAC), 85% (200 VAC) at 100% load Rated Output Voltage 24 VDC Rated Output Current 6.5 A Overvoltage Protection Constant current drop method with automatic recovery Protection Activation Level Activates at 26.4 V or more Safety Standards UL508, UL60950-1, CSA C22.2, EN60950-1, EN50178, IEC60950-1 EMC Standards FCC Part15B Class A, EN55011 Class A, EN61000-6-2 Harmonic Emission Limit EN61000-3-2 compliant Operating Temperature Range -10 to +55 °C (14 to 131 °F) Storage Temperature Range -20 to +70 °C (-4 to 158 °F) Operating Humidity 85% RH or less (no condensation) Mounting Method DIN rail Cooling Method Natural air convection Material Metal housing with screw terminals Dimensions Ultra-compact design for control cabinet installation Weight Approx. 700 g (1.45 lb) Information About CA-U4 The CA-U4 is part of Keyence’s CA Series power supplies, engineered to provide efficient and reliable DC power in compact form factors. It supports a wide input voltage range from 85 to 264 VAC (47–63 Hz) and delivers a 24 VDC, 6.5 A output suitable for a variety of Keyence controllers and peripheral devices. Built with overvoltage protection and automatic recovery, the CA-U4 maintains safe operation during power fluctuations. Designed for DIN rail mounting, it offers a durable solution for control cabinets requiring space-saving, energy-efficient, and safety-certified power sources. Key Features: Wide Input Range: Accepts 85–264 VAC or 110–370 VDC input for global power compatibility. High Efficiency: Delivers up to 85% efficiency at 200 VAC under full load for reduced energy consumption. Stable 24 VDC Output: Provides a constant 24 VDC, 6.5 A output suitable for industrial electronics. Overvoltage Protection: Automatic current drop and recovery ensures safe operation during surges. Compact Form Factor: Ultra-compact switch-mode design for tight installation spaces. DIN Rail Mounting: Enables fast, secure installation in control panels and enclosures. Industrial Durability: Operates reliably from -10 °C to +55 °C in harsh environments. Global Safety Compliance: Certified under UL, CSA, EN, and IEC safety standards. Harmonic Current Limiting: Meets EN61000-3-2 for improved electromagnetic compatibility. Low Maintenance: Automatic restart function after voltage interruption for reduced downtime. The CA-U4 delivers the reliability and performance required for powering automation controllers, sensors, and vision systems in industrial environments.
Brand: Keyence · Category: Relays, Contactors & Switches
Key features
- Wide Input Range: Accepts 85–264 VAC or 110–370 VDC input for global power compatibility.
- High Efficiency: Delivers up to 85% efficiency at 200 VAC under full load for reduced energy consumption.
- Stable 24 VDC Output: Provides a constant 24 VDC, 6.5 A output suitable for industrial electronics.
- Overvoltage Protection: Automatic current drop and recovery ensures safe operation during surges.
- Compact Form Factor: Ultra-compact switch-mode design for tight installation spaces.
- DIN Rail Mounting: Enables fast, secure installation in control panels and enclosures.
- Industrial Durability: Operates reliably from -10 °C to +55 °C in harsh environments.
- Global Safety Compliance: Certified under UL, CSA, EN, and IEC safety standards.
- Harmonic Current Limiting: Meets EN61000-3-2 for improved electromagnetic compatibility.
- Low Maintenance: Automatic restart function after voltage interruption for reduced downtime.
Specifications
| Manufacturer part number | CA-U4 |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Keyence |
| Category | Power Supplies |
| Part Number | CA-U4 |
| Subcategory | Power Supply |
| Type | 24 VDC Switch-Mode Power Supply |
| Rated Input Voltage | 85 to 264 VAC, 47–63 Hz / 110 to 370 VDC |
| Rated Input Current | 2.2 A or less (100 VAC) / 1.1 A or less (200 VAC) |
| Efficiency | 82% (100 VAC), 85% (200 VAC) at 100% load |
| Rated Output Voltage | 24 VDC |
| Rated Output Current | 6.5 A |
| Overvoltage Protection | Constant current drop method with automatic recovery |
| Protection Activation Level | Activates at 26.4 V or more |
| Safety Standards | UL508, UL60950-1, CSA C22.2, EN60950-1, EN50178, IEC60950-1 |
| EMC Standards | FCC Part15B Class A, EN55011 Class A, EN61000-6-2 |
| Harmonic Emission Limit | EN61000-3-2 compliant |
| Operating Temperature Range | -10 to +55 °C (14 to 131 °F) |
| Storage Temperature Range | -20 to +70 °C (-4 to 158 °F) |
| Operating Humidity | 85% RH or less (no condensation) |
| Mounting Method | DIN rail |
| Cooling Method | Natural air convection |
| Material | Metal housing with screw terminals |
| Dimensions | Ultra-compact design for control cabinet installation |
| Weight | Approx. 700 g (1.45 lb) |
| Product type | Power Supply |
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