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MERSEN Surge Protection Device: Three Phase, 480V AC Wye, 3 Poles, 4 Wires, L-L/L-N - DIN Rail Internal-Mount SPDs
MERSENDIN Rail Internal-Mount SPDs

MERSEN Surge Protection Device: Three Phase, 480V AC Wye, 3 Poles, 4 Wires, L-L/L-N

The MERSEN STP480Y07M is a three-phase, DIN-rail internal-mount surge protective device (SPD) for 480V AC Wye systems with 4 wires and 3 poles. It provides L-N mode protection, a voltage protection rating of 2500V…

SKU 3G-OTH-22966

Brand
MERSEN
Item
Surge Protection Device: Three Phase, 480V AC Wye, 3 Poles, 4 Wires, L-L/L-N
Category
DIN Rail Internal-Mount SPDs
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Technical Specifications

MERSEN
Manufacturer Part Number
STP480Y07M
Type
L-L/L-N
AC
320/640 V
Poles
3
Wires
4
AC Wye
480V
Voltage
480V AC Wye
Includes
Form C Dry Contact
Filtering
No
Mounting Style
DIN-Rail
Number of Wires
4 Wires
Enclosure Material
Polyethylene Terephthalate
Modes of Protection
L-N
Voltage Protection Rating
2500V (L-L)
Short Circuit Current Rating
200kA
Max. Continuing Operating Voltage
320/640 V AC
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MERSEN Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MERSEN STP480Y07M is a three-phase, DIN-rail internal-mount surge protective device (SPD) for 480V AC Wye systems with 4 wires and 3 poles. It provides L-N mode protection, a voltage protection rating of 2500V (L-L), a short-circuit current rating of 200kA, and a maximum continuous operating voltage of 320/640 V AC. The unit includes a Form C dry contact and is housed in a polyethylene terephthalate enclosure.

Frequently Asked Questions

What is the MERSEN STP480Y07M surge protection device used for?

The MERSEN STP480Y07M is a three-phase DIN-rail internal-mount SPD designed to protect electrical equipment in 480V AC Wye systems from transient overvoltages. It is commonly used in industrial and commercial power distribution panels, motor control centers, and critical process machinery to safeguard sensitive electronics and reduce downtime.

What are the specifications of the MERSEN STP480Y07M?

The MERSEN STP480Y07M is a 480V AC Wye, 3-pole, 4-wire SPD with L-N protection modes. Key specs include a maximum continuous operating voltage of 320/640 V AC, voltage protection rating of 2500V (L-L), short-circuit current rating of 200kA, and a polyethylene terephthalate enclosure. It includes a Form C dry contact for remote monitoring.

Where to buy the MERSEN STP480Y07M worldwide?

3G Electric supplies the MERSEN STP480Y07M surge protection device worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact our team for a quote and lead time; we source and deliver this MERSEN SPD to any international destination.

How to install the MERSEN STP480Y07M on a DIN rail?

To install the MERSEN STP480Y07M, mount the SPD onto a standard DIN rail in your panel, ensuring the system is de-energized. Connect the line and neutral conductors per the L-N protection mode, and terminate the Form C dry contact for alarm signaling. Follow NEC and local codes; consult a qualified electrician for proper installation.

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 din rail internal-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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MERSEN Surge Protection Device: Single Phase, 240/480V AC, 2 Poles, 3 Wires, L-L/L-N, 275/550 V AC (MPN STP480S07). Key specifications — Voltage: 240/480V AC; Number of Wires: 3 Wires; Modes of Protection: L-N; Max. Continuing Operating Voltage: 275/550 V AC; Voltage Protection Rating: 600V (L-N); Short Circuit Current Rating: 200kA; Filtering: No; Enclosure Material: Polyethylene Terephthalate.
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MERSEN Surge Protection Device: Three Phase, 240V AC Delta, 3 Poles, 4 Wires, L-G/L-L, 275/550 V AC (MPN STP240D07). Key specifications — Voltage: 240V AC Delta; Number of Wires: 4 Wires; Modes of Protection: L-L; Max. Continuing Operating Voltage: 275/550 V AC; Voltage Protection Rating: 900V (L-G); Short Circuit Current Rating: 200kA; Filtering: No; Enclosure Material: Polyethylene Terephthalate.
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MERSEN Surge Protection Device: Three Phase, 240V AC Delta, 3 Poles, 4 Wires, L-G/L-L, 275/550 V AC (MPN STP240D07). Key specifications — Voltage: 240V AC Delta; Number of Wires: 4 Wires; Modes of Protection: L-L; Max. Continuing Operating Voltage: 275/550 V AC; Voltage Protection Rating: 900V (L-G); Short Circuit Current Rating: 200kA; Filtering: No; Enclosure Material: Polyethylene Terephthalate.