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

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

The MERSEN STP480D07 is a three-phase, DIN-rail internal-mount surge protective device (SPD) for 480V AC Delta systems with 4 wires. It provides L-G mode protection, a voltage protection rating of 1500V (L-G), and a…

SKU 3G-OTH-22801

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

MERSEN
Manufacturer Part Number
STP480D07
Type
L-G/L-L
AC
550/1100 V
Poles
3
Wires
4
Voltage
480V AC Delta
AC Delta
480V
Filtering
No
Mounting Style
DIN-Rail
Number of Wires
4 Wires
Enclosure Material
Polyethylene Terephthalate
Modes of Protection
L-G
Voltage Protection Rating
1500V (L-G)
Short Circuit Current Rating
200kA
Max. Continuing Operating Voltage
550/1100 V AC
View Full Spec Sheet

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

Product Description

The MERSEN STP480D07 is a three-phase, DIN-rail internal-mount surge protective device (SPD) for 480V AC Delta systems with 4 wires. It provides L-G mode protection, a voltage protection rating of 1500V (L-G), and a short circuit current rating of 200kA. The SPD has a max. continuing operating voltage of 550/1100 V AC and features a polyethylene terephthalate enclosure.

Frequently Asked Questions

What is the MERSEN STP480D07 surge protection device used for?

The MERSEN STP480D07 is a three-phase, DIN-rail internal-mount surge protective device (SPD) designed for 480V AC Delta systems with 4 wires. It protects industrial equipment from transient overvoltages in L-G mode, commonly used in manufacturing plants, data centers, and commercial buildings to safeguard sensitive electronics.

What are the specifications of the MERSEN STP480D07?

The MERSEN STP480D07 operates at 480V AC Delta with 4 wires, providing L-G mode protection. It has a max. continuing operating voltage of 550/1100 V AC, a voltage protection rating of 1500V (L-G), and a short circuit current rating of 200kA. The enclosure is made of polyethylene terephthalate, and it mounts on a DIN rail.

Where to buy the MERSEN STP480D07 worldwide?

You can source the MERSEN STP480D07 through 3G Electric, a global industrial equipment distributor established in 1990. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead times; we supply genuine MERSEN surge protection devices to industrial buyers globally.

How to install the MERSEN STP480D07 surge protection device?

Install the MERSEN STP480D07 on a standard DIN rail inside an electrical panel. Ensure the system is de-energized before mounting. Connect the 4 wires per the L-G mode configuration for 480V AC Delta systems. Follow generic SPD best practices: use appropriate overcurrent protection and keep leads short to minimize impedance. 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 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: Three Phase, 480V AC Wye, 3 Poles, 4 Wires, L-L/L-N, 320/640 V AC (MPN STP480Y07M). Key specifications — Voltage: 480V AC Wye; Number of Wires: 4 Wires; Modes of Protection: L-N; Max. Continuing Operating Voltage: 320/640 V AC; Voltage Protection Rating: 2500V (L-L); Short Circuit Current Rating: 200kA; Filtering: No; Includes: Form C Dry Contact.
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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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