Overview
The Daykin APFS-03 transformer disconnect is a compact, industrial-grade power distribution unit designed to provide safe, isolated power to control panel accessories. The APFS Series is a NEMA 1 enclosed transformer disconnect with an electrostatically shielded transformer that helps protect programmable controllers, microprocessors and computers against line noise and transient voltages. When wired to the line side of the control panel’s main disconnect, it provides a safe, accepted source of power for components that need to remain energized when the main disconnect is turned off, such as control panel lighting, computers, PLCs, HMIs, and convenience receptacles.
Key Features
- Transformer size rated 1.5 kVA (1500 VA)
- Power-on pilot light for status indication
- Class CC primary fuses and fuseholders provided
- Secondary fuseholders only—suitable for 13/32″ × 1½” fuses
- 15 Amp duplex receptacle provided in all units
- Switch can be locked in the off position with up to three (3) padlocks
Technical Specifications
- Primary fuses: Class CC
- Secondary fuses: 13/32″ × 1½” fuse-compatible
- Output receptacle: 15 Amp duplex
- Enclosure type: NEMA 1
- Transformer rating: 1.5 kVA (1500 VA)
- Transformer shielding: Electrostatic shield
- Pilot light: Power-on indicator
- Lock-out capability: Up to 3 padlocks in off position
Typical Applications
Common applications include providing a separate circuit for control panel lighting, computers, PLCs, HMIs, and convenience receptacles. The APFS-03 is ideal for machine tool, automotive, and industrial automation environments where critical control components must maintain power independently from the main panel disconnect.
Compatibility & Replacements
Compatible With
- Industrial control panels (NEMA 1 enclosure mounting)
- Machine tool control systems
- Automotive manufacturing equipment
- PLC and HMI installations
- Panel-mounted lighting and accessory circuits
Replaces / Drop-In Replacement For
- Other Daykin APFS-03 units
- Compatible with APFS Series installations rated for 1.5 kVA
Works With
- Rockwell Automation CompactLogix and ControlLogix systems
- Siemens S7-1200 and S7-1500 PLCs
- Mitsubishi FX and Q-series PLCs
- Omron NX-series controllers
- Standard 120V AC control panel circuits
- Class CC fused distribution systems
