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MERSEN Surge Protection Device: Three Phase, 120/208V AC Wye, 4 Poles, 5 Wires - DIN Rail Internal-Mount SPDs
MERSENDIN Rail Internal-Mount SPDs

MERSEN Surge Protection Device: Three Phase, 120/208V AC Wye, 4 Poles, 5 Wires

The MERSEN STP208YN07 is a three-phase DIN Rail internal-mount surge protection device (SPD) rated for 120/208V AC Wye systems with 5 wires and 4 poles. It provides N-G mode protection with a voltage protection…

SKU 3G-OTH-23022

Brand
MERSEN
Item
Surge Protection Device: Three Phase, 120/208V AC Wye, 4 Poles, 5 Wires
Category
DIN Rail Internal-Mount SPDs
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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
STP208YN07
Type
L-G/L-L/L-N/N-G
Poles
4
Wires
5
AC Wye
120/208V
Voltage
120/208V AC Wye
Filtering
No
Mounting Style
DIN-Rail
Number of Wires
5 Wires
Enclosure Material
Polyethylene Terephthalate
Modes of Protection
N-G
Voltage Protection Rating
600V (N-G)
Short Circuit Current Rating
200kA
Max. Continuing Operating Voltage
175/350 V AC

Technical Documents

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

Product Description

The MERSEN STP208YN07 is a three-phase DIN Rail internal-mount surge protection device (SPD) rated for 120/208V AC Wye systems with 5 wires and 4 poles. It provides N-G mode protection with a voltage protection rating of 600V (N-G), a short circuit current rating of 200kA, and a max. continuing operating voltage of 175/350 V AC. The enclosure is made of polyethylene terephthalate, and the unit does not include filtering.

Frequently Asked Questions

What is the MERSEN STP208YN07 surge protection device used for?

The MERSEN STP208YN07 is a three-phase DIN Rail internal-mount SPD designed to protect electrical equipment from transient overvoltages in 120/208V AC Wye systems. It is commonly used in commercial and industrial power distribution panels to safeguard sensitive electronics against lightning-induced surges and switching transients.

What are the specifications of the MERSEN STP208YN07?

The MERSEN STP208YN07 is a 120/208V AC Wye, 4-pole, 5-wire SPD with N-G mode protection. It has a voltage protection rating of 600V (N-G), a short circuit current rating of 200kA, and a max. continuing operating voltage of 175/350 V AC. The enclosure is polyethylene terephthalate, and it does not include filtering.

Where to buy the MERSEN STP208YN07 worldwide?

3G Electric supplies the MERSEN STP208YN07 surge protection device to customers worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this MERSEN SPD to any country.

How to install the MERSEN STP208YN07 surge protection device?

Install the MERSEN STP208YN07 on a DIN rail inside a suitable electrical panel. Ensure the system is de-energized before mounting. Connect the 5 wires per the 120/208V AC Wye configuration, observing L-G, L-L, L-N, and N-G protection modes. Follow local electrical codes and the manufacturer's wiring diagram for safe 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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Compatible alternatives & equivalents

Cross-referenced by specification & description
MERSEN Surge Protection Device: Three Phase, 120/208V AC Wye, 3 Poles, 4 Wires, L-L/L-N, 200kA (MPN STP208Y07)
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MERSEN Surge Protection Device: Three Phase, 120/208V AC Wye, 3 Poles, 4 Wires, L-L/L-N, 200kA (MPN STP208Y07)
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MERSEN Surge Protection Device: Three Phase, 120/208VAC Wye, 3 Poles, 2 Wires, L-L/L-N, 208 V (MPN STP208Y07M)
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 Surge Protection Device: Three Phase, 480V AC Wye, 4 Poles, 5 Wires, L-G/L-L/L-N/N-G, 200kA (MPN STP480YN07)
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 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, 347/600V AC Wye, 3 Poles, 4 Wires, L-L/L-N, 200kA (MPN STP600Y07M)
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MERSEN Surge Protection Device: Three Phase, 347/600V AC Wye, 3 Poles, 4 Wires, L-L/L-N, 200kA (MPN STP600Y07M)

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MERSEN Surge Protection Device: Single Phase, 120V AC, 1 Poles, 2 Wires, L-N, 175 V AC, 600V (L-N) (MPN STP120P07M)
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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)
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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)
MERSEN Surge Protection Device: Three Phase, 347/600V AC Wye, 3 Poles, 4 Wires, L-L/L-N, 200kA (MPN STP600Y07)
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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)
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