Citel 277/480 Volt 50kA Surge Protection Device | 3 Phase Wye
Dwayne Kula | President, CTO and Founder
Out of stock
Product Specifications
Key Features
| Brand | Citel |
| SPD Type | UL1449 TYPE 1 LISTED |
| Volts | 277/480 |
| Phase | 3Y (WYE) |
| Modes | L-L, L-N, L-G, N-G |
| Voltage Protection Rating | 2500/1200/1500/1200 |
| Maximum Continuous Operating Voltage | 560/320/320/280 |
| IN | 20 kA |
| SCCR | 150 kA |
| IMAX | 50 kA |
| Technology | MOV-GSG |
| Network Configuration | 3PH, 4W+G, Wye |
| Connection Method | 36 in #12 AWG LEADS |
| Mounting | Threaded 1/2 in NPT |
| Fail Safe | Yes, no upstream over current protection required |
| Real-Time Diagnostics | LED and audible alarm |
The CITEL M50-A Series is a panel-mounted surge protective device (SPD) designed for service entrance, branch, and distribution panel applications, featuring hybrid MOV-GSG technology, 50kA surge current protection per mode, LED status indication, and an audible alarm.
It provides L-N, L-G, and N-G protection with no leakage current, is suitable for indoor or outdoor installation, and is UL 1449 Type 1 Listed.
Additional Resources
Product Overview
The Citel M50-A Series surge protective device is a panel-mounted SPD for 277/480V, 3-phase Wye electrical systems. It is designed for service entrance, branch panel, and distribution panel protection.
This UL 1449 Type 1 Listed device uses hybrid MOV-GSG technology and provides surge protection across L-L, L-N, L-G, and N-G modes.
Core Performance and Output
The SPD provides 50kA maximum surge current protection per mode and has a 150kA SCCR. Its nominal discharge current rating is 20kA.
Voltage protection ratings are 2500/1200/1500/1200 for the applicable protection modes. Maximum continuous operating voltage ratings are 560/320/320/280.
Build Quality and Physical Characteristics
The unit mounts through a threaded 1/2 in. NPT connection and uses 36 in. #12 AWG leads for electrical connection. It is suitable for indoor or outdoor installation.
Where This Product Fits Best
This SPD fits 277/480V, 3-phase Wye lighting electrical systems where surge protection is needed at service entrances, distribution panels, or branch panels.
- fixture repair and replacement
- lighting maintenance support
- retrofit support
- service stock for maintenance teams
- field repair projects
Installation and Long-Term Use
LED status indication and an audible alarm provide real-time diagnostic notification. The device includes fail-safe protection and does not require upstream overcurrent protection.
Safety, Certifications, and Warranty
The Citel M50-A Series is UL 1449 Type 1 Listed.
Frequently Asked Questions
Q: What electrical system is this surge protective device designed for?
A: This Citel surge protective device is designed for 277/480V, 3-phase, 4-wire plus ground Wye electrical systems.
Q: How is the Citel M50-A Series SPD mounted?
A: The Citel M50-A Series SPD mounts through a threaded 1/2 in. NPT connection and uses 36 in. #12 AWG leads.
Q: Does this SPD provide operating status indication?
A: Yes. This Citel SPD includes LED diagnostics and an audible alarm for real-time status indication.
Web ID: 2778
