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MERSEN SPD: Three Phase, 480/277VAC WYE, 1200V (L-G)/1200V (L-N)/2000V (L-L)/700V (N-G) - External Surface-Mount SPDs
MERSENExternal Surface-Mount SPDs

MERSEN SPD: Three Phase, 480/277VAC WYE, 1200V (L-G)/1200V (L-N)/2000V (L-L)/700V (N-G)

The MERSEN SPD: Three Phase is an external surface-mount surge protective device (SPD) for 480/277VAC WYE systems. It features a non-metallic enclosure, an LED status indicator, a maximum continuous operating voltage…

SKU 3G-OTH-21841

Brand
MERSEN
Item
SPD: Three Phase, 480/277VAC WYE, 1200V
Category
External Surface-Mount SPDs
Available to Order
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

MERSEN
Manufacturer Part Number
STXT480Y10
Type
1200V (L-G)/1200V (L-N)/2000V (L-L)/700V (N-G), 480/277 V
WYE
480/277VAC
Voltage
480/277VAC WYE
Includes
LED Status Indicator
Enclosure Material
Non-Metallic
Voltage Protection Rating
1200V (L-N)
Max. Continuing Operating Voltage
480/277 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 (SPD) for 480/277VAC WYE systems. It features a non-metallic enclosure, an LED status indicator, a maximum continuous operating voltage of 480/277 V, and a voltage protection rating of 1200V (L-N).

Frequently Asked Questions

What is the MERSEN STXT480Y10 SPD used for?

The MERSEN STXT480Y10 is a three-phase surge protective device (SPD) used to protect electrical equipment in industrial facilities from voltage transients and surges on 480/277VAC WYE power systems. It is commonly applied in manufacturing plants, data centers, and commercial buildings to safeguard sensitive controls and machinery.

What are the specifications of the MERSEN STXT480Y10 SPD?

The MERSEN STXT480Y10 SPD is rated for 480/277VAC WYE systems with a maximum continuous operating voltage of 480/277 V. It provides voltage protection ratings of 1200V (L-G), 1200V (L-N), 2000V (L-L), and 700V (N-G). The unit includes an LED status indicator and a non-metallic enclosure.

Where to buy the MERSEN STXT480Y10 SPD worldwide?

3G Electric supplies the MERSEN STXT480Y10 SPD to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this surge protective device.

How to install the MERSEN STXT480Y10 SPD?

Install the MERSEN STXT480Y10 SPD by mounting it externally on a flat surface near the service panel. Connect the SPD to the 480/277VAC WYE system per the manufacturer's wiring diagram, ensuring proper grounding. Always de-energize the system before installation and follow local electrical codes.

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)
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MERSEN Surge Protection Device: Three Phase, 480/277VAC WYE, 1200V (L-N)/1800V (L-G)/2000 V (L-L) (MPN STXR480Y05)
MERSEN Surge Protection Device: Three Phase, 480V AC Wye, 3 Poles, 4 Wires, L-L/L-N, 320/640 V AC (MPN STP480Y07)
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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 STP480Y07)
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, 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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