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MERSEN SPD: Three Phase, 277/480VAC Wye, 1000V (L-N)/1000V (N-G)/1500V (L-G)/2000V (L-L) - External Surface-Mount SPDs
MERSENExternal Surface-Mount SPDs

MERSEN SPD: Three Phase, 277/480VAC Wye, 1000V (L-N)/1000V (N-G)/1500V (L-G)/2000V (L-L)

The MERSEN SPD: Three Phase is an external surface-mount surge protective device designed for 277/480VAC Wye electrical systems. It features a maximum surge current per mode of 75 kA, a voltage protection rating of…

SKU 3G-OTH-21819

Brand
MERSEN
Item
SPD: Three Phase, 277/480VAC Wye, 1000V
Category
External Surface-Mount SPDs
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

MERSEN
Manufacturer Part Number
STP480YN05M
Type
1000V (L-N)/1000V (N-G)/1500V (L-G)/2000V (L-L), 480 V
Wye
277/480VAC
Voltage
277/480VAC Wye
Includes
Microswitch
Voltage Protection Rating
1000V (N-G)
Max. Surge Current per Mode
75 kA
Max. Continuing Operating Voltage
480 V

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MERSEN Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MERSEN SPD: Three Phase is an external surface-mount surge protective device designed for 277/480VAC Wye electrical systems. It features a maximum surge current per mode of 75 kA, a voltage protection rating of 1000V (N-G), and a maximum continuing operating voltage of 480 V. This unit includes a microswitch for monitoring and is identified by manufacturer part number STP480YN05M.

Frequently Asked Questions

What is the MERSEN STP480YN05M SPD used for?

The MERSEN STP480YN05M is an external surface-mount surge protective device (SPD) used to protect three-phase 277/480VAC Wye electrical systems from transient overvoltages. It is commonly applied in commercial and industrial facilities to safeguard sensitive equipment against lightning strikes and switching surges.

What are the specifications of the MERSEN STP480YN05M SPD?

The MERSEN STP480YN05M SPD operates at 277/480VAC Wye with a maximum continuing operating voltage of 480 V. It offers a voltage protection rating of 1000V (N-G) and a maximum surge current per mode of 75 kA. The unit includes a microswitch for remote monitoring and is identified by MPN STP480YN05M.

Where to buy the MERSEN STP480YN05M SPD worldwide?

You can source the MERSEN STP480YN05M SPD worldwide through 3G Electric, a global industrial equipment distributor established in 1990. 3G Electric handles full logistics, customs clearance, and delivery to your location. Contact them for availability and lead time on this MERSEN surge protective device.

How to install the MERSEN STP480YN05M SPD?

Install the MERSEN STP480YN05M SPD externally on a 277/480VAC Wye system following the manufacturer's wiring diagram. Ensure the unit is connected to the appropriate overcurrent protection and that the microswitch is wired for remote indication. Always de-energize the system before installation and consult a qualified electrician.

Used in

Common applications for MERSEN
Power electronics protection — MERSEN A70Q series semiconductor fuses in variable frequency drives for motor control.
Surge protection for industrial panels — MERSEN STP480D07 SPDs in three-phase 480V AC distribution boards.
Control circuit overcurrent protection — MERSEN ATM series midget fuses in PLC and instrumentation cabinets.
Power distribution in manufacturing — MERSEN FSPDB4A finger-safe blocks in motor control centers for wire management.
DC bus protection in renewable energy — MERSEN A30QS series fuses in solar inverter DC inputs.
High-voltage semiconductor protection — MERSEN A70Q series fuses in welding equipment power supplies.

MERSEN Products

3G Electric supplies MERSEN external surface-mount spds. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
MERSEN SPD: Three Phase, 480VAC DELTA & HRG WYE, 1800V (L-G)/4000V (L-L), 480 V, 4 (MPN STZ480D20B1)
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MERSEN SPD: Three Phase, 480VAC DELTA & HRG WYE, 1800V (L-G)/4000V (L-L), 480 V, 4 (MPN STZ480D20B1)
MERSEN Surge Protection Device: Three Phase, 480V AC Wye, 3 Poles, 4 Wires, L-L/L-N, 320/640 V AC (MPN STP480Y07M)
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MERSEN Surge Protection Device: Three Phase, 480V AC Wye, 3 Poles, 4 Wires, L-L/L-N, 320/640 V AC (MPN STP480Y07M)
MERSEN Surge Protection Device: Three Phase, 480V AC Wye, 4 Poles, 5 Wires, L-G/L-L/L-N/N-G, 200kA (MPN STP480YN07M)
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MERSEN Surge Protection Device: Three Phase, 480V AC Wye, 4 Poles, 5 Wires, L-G/L-L/L-N/N-G, 200kA (MPN STP480YN07M)
MERSEN Surge Protection Device: Three Phase, 480V AC Wye, 3 Poles, 4 Wires, L-L/L-N, 320/640 V AC (MPN STP480Y07)
MERSEN
MERSEN Surge Protection Device: Three Phase, 480V AC Wye, 3 Poles, 4 Wires, L-L/L-N, 320/640 V AC (MPN STP480Y07)
MERSEN Surge Protection Device: Three Phase, 480V AC Wye, 4 Poles, 5 Wires, L-G/L-L/L-N/N-G, 200kA (MPN STP480YN07)
MERSEN
MERSEN Surge Protection Device: Three Phase, 480V AC Wye, 4 Poles, 5 Wires, L-G/L-L/L-N/N-G, 200kA (MPN STP480YN07)
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MERSEN
MERSEN Surge Protection Device: single Phase, 240/480VAC Split, 2 Poles, 2 Wires, L-L/L-N, 240/480 V (MPN STP480S07M)

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