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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 STP480D07M is a three-phase DIN Rail internal-mount surge protective device (SPD) for 480V AC Delta systems with 4 wires. It provides L-L mode protection, a voltage protection rating of 3000V (L-L), a…

SKU 3G-OTH-22810

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
STP480D07M
Type
L-G/L-L
AC
550/1100 V
Poles
3
Wires
4
Voltage
480V AC Delta
AC Delta
480V
Includes
Form C Dry Contact
Filtering
No
Mounting Style
DIN-Rail
Number of Wires
4 Wires
Enclosure Material
Polyethylene Terephthalate
Modes of Protection
L-L
Voltage Protection Rating
3000V (L-L)
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 STP480D07M is a three-phase DIN Rail internal-mount surge protective device (SPD) for 480V AC Delta systems with 4 wires. It provides L-L mode protection, a voltage protection rating of 3000V (L-L), a short circuit current rating of 200kA, and a max. continuing operating voltage of 550/1100 V AC. This SPD includes a Form C dry contact and is housed in a polyethylene terephthalate enclosure.

Frequently Asked Questions

What is the MERSEN STP480D07M surge protection device used for?

The MERSEN STP480D07M is a three-phase DIN Rail internal-mount SPD designed to protect 480V AC Delta electrical systems from transient overvoltages. It is commonly used in industrial and commercial power distribution panels to safeguard sensitive equipment against lightning strikes and switching surges.

What are the specifications of the MERSEN STP480D07M?

The MERSEN STP480D07M is a 3-pole, 4-wire SPD for 480V AC Delta systems. Key specs include a max. continuing operating voltage of 550/1100 V AC, voltage protection rating of 3000V (L-L), short circuit current rating of 200kA, and L-L mode protection. It includes a Form C dry contact and has a polyethylene terephthalate enclosure.

Where to buy the MERSEN STP480D07M worldwide?

You can source the MERSEN STP480D07M through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide competitive pricing and reliable sourcing for this MERSEN SPD.

How to install the MERSEN STP480D07M surge protection device?

Install the MERSEN STP480D07M on a DIN rail inside a suitable electrical panel. Ensure the system is de-energized, then connect the SPD to the 480V AC Delta supply following the L-L wiring diagram. The Form C dry contact can be wired to a monitoring system. Always follow local electrical codes and manufacturer guidelines.

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 Delta, 3 Poles, 4 Wires, L-G/L-L, 550/1100 V AC (MPN STP480D07). Key specifications — Voltage: 480V AC Delta; Number of Wires: 4 Wires; Modes of Protection: L-G; Max. Continuing Operating Voltage: 550/1100 V AC; Voltage Protection Rating: 1500V (L-G); Short Circuit Current Rating: 200kA; Filtering: No; Enclosure Material: Polyethylene Terephthalate.
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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: 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.
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, 480V AC Wye, 4 Poles, 5 Wires, L-G/L-L/L-N/N-G, 200kA (MPN STP480YN07M). Key specifications — Voltage: 480V AC Wye; Number of Wires: 5 Wires; Modes of Protection: L-L; Max. Continuing Operating Voltage: 175/320/495/640 V AC; Voltage Protection Rating: 1000V (L-N); Short Circuit Current Rating: 200kA; Filtering: No; Includes: Form C Dry Contact.
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MERSEN Surge Protection Device: single Phase, 240/480VAC Split, 2 Poles, 2 Wires, L-L/L-N, 240/480 V (MPN STP480S07M). Key specifications — Voltage: 240/480VAC Split; Number of Wires: 2 Wires; Phase: single; Modes of Protection: L-N; Max. Continuing Operating Voltage: 240/480 V; Voltage Protection Rating: 600V (L-N); Short Circuit Current Rating: 200 kA; Includes: Microswitch.

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MERSEN Surge Protection Device: Three Phase, 347/600V AC Wye, 4 Poles, 5 Wires, L-G/L-L/L-N/N-G (MPN STP600YN07). Key specifications — Voltage: 347/600V AC Wye; Number of Wires: 5 Wires; Modes of Protection: L-N; Max. Continuing Operating Voltage: 275/420/695/840 V AC; Voltage Protection Rating: 800V (N-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.
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