MST Series
Residential/Commercial/Industrial Surge Protection Device
The MST Series is a modular Surge Protection Device designed for utility, commercial, industrial and residential applications.
Models are available for all standard electrical services and provide up to 100kA of surge energy handling per phase. This rating is 10 times the energy handling of the IEEE's highest Category C location rating of 10kA/20kV using an 8x20μs waveform. All models carry a 100kA RMS symmetrical fault current rating making expensive disconnects and/or costly replacement fuses unnecessary.
MST units incorporate a replaceable MT protection module that is completely self-contained with fusing and diagnostic circuitry. The MT module can be replaced in the field, thereby eliminating the need to remove the entire unit from service. Replacement modules include the entire operating unit (all phases, all modes, the fuses and even the diagnostics). MST Modules are keyed to prevent the use of the wrong module for the application.
Meter-Based
Power
3D Preview
Load Current | Max Surge Current (8/20) Iₘₐₓ | Short-Circuit Current Rating (SCCR) | Repetative Impulse Rating (Iₙ) | On/Off Status⬥ | Housing Rating | Product Weight | Product Dimensions | Most Current Industry Standards | Surge Technology | Connector Form/ Type | Connector Method | Interface | Operating Temperature | Operating Frequency | Fusing | Listings & Certifications | Enclosure | Max. Operating Voltage | Max. Clamp Voltage | Energy Rating/ Wire | Response Time | Warranty | Series Resistance | Peak Pulse Power | Line - Load Sensitive | Breakover Voltage: (Line - Ground) | Attenuation Margin | NEXT | Data Transfer Rate | Power Sum NEXT | Return Loss | ACR | Power Sum ACR | ARC -F | PSACRF | Mounting | Relative Humidity | Terminals | Max. Circuits Protected | Modes of Protection | Continuous Current | Follow Current | Wire Range | Feedback | Remote Alarm Contacts | Remote Alarm contact capability (Nominal Volts/ Nominal Amps) | Remote Alarm Wire Size | Included Accessories |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
100 kA per Phase | 100 kA RMS Symmetrical | 20 kA* (nominal discharge current) | LED | NEMA 3R, 4, 4X, 12 | ANSI/UL 1449 | MOV | Hardwired | -40 ℉ to +140 ℉
(-40 ℃ to +60 ℃) | 47-63 Hz (50/60 Hz Typ.) | Surge/ Thermal | Listed to ANSI/UL 1449, ANSI/UL 1283, CSA C 22.2 | Steel (or) [304 SST/ 316 SST] (or) Polycarbonate | < 1 Nanosecond | 15 Year Limited Product Warranty | 95% noncondensing |
Specifications
Specification | Value |
|---|---|
Max Surge Current (8/20) Iₘₐₓ | 100 kA per Phase |
Short-Circuit Current Rating (SCCR) | 100 kA RMS Symmetrical |
Repetative Impulse Rating (Iₙ) | 20 kA* (nominal discharge current) |
On/Off Status⬥ | LED |
Housing Rating | NEMA 3R, 4, 4X, 12 |
Most Current Industry Standards | ANSI/UL 1449 |
Surge Technology | MOV |
Connector Method | Hardwired |
Operating Temperature | -40 ℉ to +140 ℉
(-40 ℃ to +60 ℃) |
Operating Frequency | 47-63 Hz (50/60 Hz Typ.) |
Fusing | Surge/ Thermal |
Listings & Certifications | Listed to ANSI/UL 1449, ANSI/UL 1283, CSA C 22.2 |
Enclosure | Steel (or) [304 SST/ 316 SST] (or) Polycarbonate |
Response Time | < 1 Nanosecond |
Warranty | 15 Year Limited Product Warranty |
Relative Humidity | 95% noncondensing |
Diagrams
Not To Scale
Electrical Ratings
Click on any MST Series model from the table to request a quote
Model Number | Service Voltage | TYPE | MCOV | L-N (VPR) | L-G (VPR) | N-G (VPR) | L-L (VPR) |
|---|---|---|---|---|---|---|---|
MST050/120-3H-0-2 | High Leg Delta, 4 Wire + Gnd. | AC | 150/320V | 600/1000V | 600/1000V | 600V | 1200/1800V |
MST050/120-3W-0-2 | 3 Phase Wye, 4 Wire + Gnd. | AC | 150V | 600V | 600V | 600V | 1200V |
MST050/120-SP-0-2 | Split Phase 3 Wire + Gnd. | AC | 150V | 600V | 600V | 600V | 1200V |
MST050/220-3W-0-2 | 3 Phase Wye, 4 Wire + Gnd. | AC | 320V | 1000V | 1000V | 1000V | 2000V |
MST050/230-3W-0-2 | 3 Phase Wye, 4 Wire + Gnd. | AC | 320V | 1000V | 1000V | 1000V | 2000V |
MST050/240-2P-0-1 | Single Phase, 2 Wire + GND | AC | 320V | N/A | 1000V | N/A | 2000V |
MST050/240-3D-0-1 | 3 Phase Delta, 3 Wire + Gnd. | AC | 320V | N/A | 1000V | N/A | 2000V |
MST050/240-3W-0-2 | 3 Phase Wye, 4 Wire + Gnd. | AC | 320V | 1000V | 2000V | 1000V | 2000V |
MST050/277-3W-0-2 | 3 Phase Wye, 4 Wire + Gnd. | AC | 320V | 1000V | 1000V | 1000V | 2000V |
MST050/480-3D-0-1 | 3 Phase Delta, 3 Wire + Gnd. | AC | 520V | N/A | 1800V | N/A | 4000V |
Replace XXX with desired kA rating per phase: 050 for 50 kA or 100 for 100 kA.
Then, replace XX with: 3R, 12, POL (4X Nonmetallic) or SS (Stainless) for desired NEMA Enclosure
* Devices that are rated 480V delta have a 10kA In
⬥ See Installation Guide for detailed instruction on reading On/Off Status
Compatibility Table
EDR Model Number | PVA50-1P-xxxv-S | PVA50-2P-xxxv-S | PVA50-3P-xxxy-S | PVA50-5P-xxxy-S | DRA50-1Pxxx-S | DRA50-2Pxxx-LGN | DRA50-2Pxxx-S | DRA50-3Pxxx-S | DRA50-3PSxxx-S | DRA50-4Pxxx-S | CLT-xxx | SLT CAT X/X-POE | SLT/XM-02- | SLT/XM-04- | SLT/XM-06- | SLT/XM-10- | TST010/XXX | TST020/(120-250v) | TST020/(24-48v) | TST040/XXX |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
