LITTELFUSE SPDN-B120-1P Alternate CITEL M50-120S-B
Surge Protective Device (SPD)
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M50-120S-B | SPDN-B120-1P |
Intended Application System | |
| System Voltage | 120Vac |
| Number of Phases | Single Phase |
| Conductors | 2 Wire + Ground |
| Configuration | Single |
PRODUCT COMPARISON TABLE
This page collects publicly available data from ul.com and assembles a side by side reference table for a convenient product cross reference.
| Manufacturer |
| LITTELFUSE |
| UL File # | E326289 | E320116 |
| Model | M50-120S-B | SPDN-B120-1P |
| Product Image |
| |
UL.com Ratings | UL CARD | UL CARD |
| UL APPROVAL | LISTED | LISTED |
| UL MARK |  |  |
| SPD Type | 1 | 1 |
| Volt (V) | 120 | 120 |
| AC/DC DC PV | AC | AC |
| Phase | 1S | 1S |
| Amps (A) | n/a | n/a |
| Ambient Min (C) | -35 | -35 |
| Ambient Max (C) | 80 | 85 |
| Mode | ||
| VPR (Vpk) | ||
| L-L L-N L-G N-G | - 700 1200 1200 | - 140 140 120 |
| MCOV | ||
| L-L L-N L-G N-G | - 700 700 600 | - 180 180 180 |
| In (kA) | 20 | 20 |
| SCCR (kA) | 150 | 200 |
Additional | ||
| Surge Current Rating (kA) | 50 | - |
| Protection Circuit | MOV-GSG | TMOV |
| Leakage Current | No | - |
| TOV Optimized | No | - |
| Diagnostics | LED Indicator & Remote Contacts | LED Indicator & Remote Contacts |
| Environmental Rating | 6(IP66) | Polycarbonate NEMA 4x |
| # of Wires | 3 | 3 |
| Modes of Protection | Common Mode Differential Mode | Common Mode Differential Mode |
| Warranty | 10-years | - |
| Notes |
| (1) ETL Listing Director does not publish data visible to the public except for model names. UL.com has a manufacturers key test data available to the public which helps specifiers to compare key performance and safety data across different manufacturers. |
Determining the acceptability of an SPD for UL 508A Control Panels and All Other UL Listed Equipment
The UL inspector will first consider the SPD type when determining it’s acceptability for a given application or piece of equipment. This will include UL 508A as well as all other UL Listed equipment. The first level compliance is based on the UL Approval (LISTED or RECOGNIZED) of the SPD or UL SPD Type and it’s Suitable Ratings. This means that it has to meet all safety, performance, environmental and electrical system ratings of the application. If any of these criteria are not fully met, it will require a Procedure Description, a File Update and/or Additional Testing. These actions will require additional costs that may be substantial. For this reason, it is in the interest of the specifier to use UL LISTED SPD’s to eliminate any uncertainty or to make sure the UL RECOGNIZED SPD is selected at the time of UL submittal of the equipment.
Approval Considerations Table based on UL SPD Type
| UL Mark | UL1449 SPD Type | Suitable Ratings | Procedure Described | File Update or Additional Testing | Notes |
| 1 2 | Yes | No | No | The only requirement is that the SPD must match electrical and environmental ratings of the UL 508A Control Panel. A UL field inspection of the control panel with the SPD installed is required as a part of a standard follow-up service visit. |
 | 1CA 2CA 4CA 5 | Yes | Yes | Yes | Yes – All UL recognized SPD’s require a UL engineering evaluation of the SPD’s existing UL1449 E–file. This will result, at a minimum, in a cost to update the UL file and may also require testing that would result in additional costs. |
UL data is publicly available with a free account at UL.com. The data has been reviewed by our engineering department. From time to time, the applicants UL file (including CITEL's) may become changed or updated at UL.com due to new testing or corrections to a report. At the time of this comparison you will find this information to be accurate to the UL web site. If you find any information requires an update, please bring to our attention and it will be updated immediately. |
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| 10108 USA Today Way Miramar, FL 33025 USA | Contact us to develop a surge mitigation solution for your application |
| www.citel.us | Where to purchase Citel SPD's |
