Citel 480 Volt 50kA Surge Protection Device | 3 Phase Delta
The CITEL M50-A Series surge protective device is an excellent choice for industrial control systems and electrical panels, offering robust 50kA surge current protection with hybrid MOV-GSG technology. Its UL1449 Type 1 listing ensures reliability for both indoor and outdoor installations, while the fail-safe design and real-time diagnostics enhance operational safety. Ideal for service entrance and distribution panels, this SPD’s side mount with threaded M22 adapter simplifies installation, making it suitable for demanding environments like manufacturing facilities and warehouses.
Dwayne Kula | President, CTO and Founder
Out of stock
Product Specifications
Key Features
| Brand | Citel |
| SPD Type | UL1449 TYPE 1 LISTED |
| Volts | 480 |
| Phase | 3 Phase Delta |
| Modes | L-L, L-G |
| Voltage Protection Rating | 2500/1500 |
| Maximum Continuous Operating Voltage | 560/560 |
| IN | 20 kA |
| SCCR | 150 kA |
| IMAX | 50 kA |
| Technology | MOV-GSG |
| Network Configuration | 3PH, 3W+G, Delta |
| 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-L, and L-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 is a panel-mounted surge protective device for 480 volt, 3 phase delta electrical systems. It provides line-to-line and line-to-ground surge protection using MOV-GSG technology.
This device is configured for 3 phase, 3 wire plus ground delta networks and supports service entrance, branch, and distribution panel placement. It includes LED status indication and an audible alarm for real-time diagnostics.
Core Performance and Output
This surge protective device operates on 480 volt, 3 phase delta systems with a maximum continuous operating voltage of 560/560 volts. It provides 20 kA nominal discharge current, 50 kA maximum surge current per mode, and a 150 kA SCCR rating.
Voltage protection ratings are 2500/1500. The device is limited to the stated 480 volt, 3 phase delta, 3 wire plus ground network configuration and should not be applied to an electrical system with a different phase or voltage arrangement.
Adjustability and Control Options
This device does not include adjustable output or field-selectable operating settings. Protection is provided across L-L and L-G modes for the specified electrical system.
Real-time diagnostics include LED indication and an audible alarm. These indicators provide local status information at the panel location.
Longevity and Reliability
MOV-GSG hybrid technology provides surge protection without leakage current. The device includes fail-safe behavior.
No upstream overcurrent protection is required according to the supplied product data. Diagnostic indication supports maintenance review when device status changes.
Build Quality and Physical Characteristics
The device uses 36 inch #12 AWG leads for electrical connection. It is intended for panel mounting.
The supplied mounting information identifies a threaded 1/2 inch NPT connection. The product metadata also references a side mount threaded M22 adapter, so the enclosure opening and mounting arrangement should be confirmed before installation.
Where This Product Fits Best
This surge protective device fits maintenance, repair, retrofit, and emergency support work involving compatible 480 volt, 3 phase delta electrical panels.
- fixture repair and replacement
- lighting maintenance support
- retrofit support
- field repair projects
- code compliance upgrades
- emergency egress support
It is suitable for indoor or outdoor installation. Final fit depends on the existing 480 volt, 3 phase delta, 3 wire plus ground electrical configuration and available panel mounting location.
Installation and Long-Term Use
The device is installed at a compatible panel using its threaded mounting connection and 36 inch leads. Lead routing should remain practical within the panel while allowing access to the LED indicator and audible alarm.
Mounting height is determined by the panel location because the supplied data does not establish a mounting height. Panel layout and available wiring space affect final placement.
How This Fixture Is Commonly Used
For fixture repair and replacement, lighting maintenance support, retrofit support, and field repair projects, this device is mounted at a compatible electrical panel serving the affected equipment. The LED and audible alarm provide local diagnostic status after installation.
Installation layout depends on the panel enclosure, threaded opening, lead routing, and electrical network configuration. A compact panel arrangement may require additional attention to available space around the mounting point and leads.
Safety, Certifications, and Warranty
UL 1449 Type 1 Listed. UL listed.
The device has fail-safe behavior and does not require upstream overcurrent protection. Warranty terms are not provided in the supplied product data.
Frequently Asked Questions
Q: What electrical system is this surge protective device designed for?
A: It is designed for 480 volt, 3 phase delta, 3 wire plus ground networks.
Q: What surge current ratings does this device have?
A: It has a 20 kA nominal discharge current rating and a 50 kA maximum surge current rating per mode. Its SCCR rating is 150 kA.
Q: Does the device provide local diagnostic indication?
A: Yes. It includes LED status indication and an audible alarm.
Q: What should be confirmed when planning panel placement?
A: Confirm the 480 volt, 3 phase delta, 3 wire plus ground network configuration, available panel mounting opening, and space for the 36 inch #12 AWG leads.
Application Questions and Clarification
Q: Can this device be used for lighting maintenance support?
A: Lighting maintenance support is a listed application. The electrical panel must use the specified 480 volt, 3 phase delta, 3 wire plus ground configuration.
Q: Is this device applicable to emergency egress support?
A: Emergency egress support is a listed application. The supplied product data identifies this product as a panel-mounted surge protective device with LED and audible diagnostics.
Web ID: 2756
