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MERSEN STP120P07 Surge Protection Device - DIN Rail Internal-Mount SPDs
MERSENDIN Rail Internal-Mount SPDs

MERSEN STP120P07 Surge Protection Device

The MERSEN STP120P07 is a single-phase, DIN-rail internal-mount surge protection device (SPD) rated for 120V AC with a 2-wire L-N protection mode. It offers a voltage protection rating of 600V (L-N), a short-circuit…

SKU 3G-OTH-22655

Brand
MERSEN
Item
STP120P07 Surge Protection Device
Part Number
STP120P07
Category
DIN Rail Internal-Mount SPDs
Available to Order
Also known as:STP120P07MERSEN
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Technical Specifications

MERSEN
Manufacturer Part Number
STP120P07
Type
L-N, 600V (L-N)
AC
120V
Poles
1
Wires
2
Voltage
120V AC
Filtering
No
Mounting Style
DIN-Rail
Number of Wires
2 Wires
Enclosure Material
Polyethylene Terephthalate
Modes of Protection
L-N
Voltage Protection Rating
600V (L-N)
Short Circuit Current Rating
200kA
Max. Continuing Operating Voltage
175 V AC

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

Product Description

The MERSEN STP120P07 is a single-phase, DIN-rail internal-mount surge protection device (SPD) rated for 120V AC with a 2-wire L-N protection mode. It offers a voltage protection rating of 600V (L-N), a short-circuit current rating of 200kA, and a maximum continuous operating voltage of 175 V AC. The unit features a polyethylene terephthalate enclosure and does not include filtering.

Frequently Asked Questions

What is the MERSEN STP120P07 surge protection device used for?

The MERSEN STP120P07 is a single-phase DIN-rail SPD that protects 120V AC equipment from transient overvoltages. It is commonly installed in industrial control panels, HVAC systems, and building automation to safeguard sensitive electronics against lightning-induced surges and switching transients.

What are the specifications of the MERSEN STP120P07?

The MERSEN STP120P07 is rated for 120V AC, 1 pole, 2 wires, with L-N protection mode. It has a maximum continuous operating voltage of 175 V AC, a voltage protection rating of 600V (L-N), and a short-circuit current rating of 200kA. The enclosure is polyethylene terephthalate, and it does not include filtering.

Where to buy the MERSEN STP120P07 worldwide?

3G Electric supplies the MERSEN STP120P07 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time on this single-phase DIN-rail SPD.

How to install the MERSEN STP120P07 on a DIN rail?

To install the MERSEN STP120P07, snap the SPD onto a standard 35mm DIN rail. Connect the line (L) and neutral (N) conductors per the wiring diagram, ensuring the supply is de-energized. Verify the system voltage does not exceed 175 V AC continuous. Follow local electrical codes and the manufacturer's instructions.

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.
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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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