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MERSEN STP240S07M DIN Rail Internal-Mount SPD - DIN Rail Internal-Mount SPDs
MERSENDIN Rail Internal-Mount SPDs

MERSEN STP240S07M DIN Rail Internal-Mount SPD

The MERSEN STP240S07M is a single-phase, DIN-rail internal-mount surge protective device (SPD) rated for 120/240V AC, 3-wire, 2-pole configurations. It provides L-N mode protection with a voltage protection rating of…

SKU 3G-OTH-22555

Brand
MERSEN
Item
STP240S07M DIN Rail Internal-Mount SPD
Part Number
STP240S07M
Category
DIN Rail Internal-Mount SPDs
Available to Order
Also known as:STP240S07MMERSEN
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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
STP240S07M
Type
L-L/L-N
AC
120/240V
Poles
2
Wires
3
Voltage
120/240V AC
Includes
Form C Dry Contact
Filtering
No
Mounting Style
DIN-Rail
Number of Wires
3 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
175/350 V AC

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

Product Description

The MERSEN STP240S07M is a single-phase, DIN-rail internal-mount surge protective device (SPD) rated for 120/240V AC, 3-wire, 2-pole configurations. It provides L-N mode protection with a voltage protection rating of 600V (L-N), a short-circuit current rating of 200kA, and a maximum continuous operating voltage of 175/350V AC. This unit includes a Form C dry contact and is housed in a polyethylene terephthalate enclosure.

Frequently Asked Questions

What is the MERSEN STP240S07M surge protection device used for?

The MERSEN STP240S07M is a single-phase, DIN-rail internal-mount SPD used to protect electrical equipment from voltage surges in 120/240V AC, 3-wire, 2-pole systems. It is commonly installed in industrial control panels, distribution boards, and commercial facilities to safeguard sensitive electronics against transient overvoltages.

What are the specifications of the MERSEN STP240S07M?

The MERSEN STP240S07M is rated for 120/240V AC, 2 poles, 3 wires, with L-N mode protection. Key specs include a maximum continuous operating voltage of 175/350 V AC, voltage protection rating of 600V (L-N), short-circuit current rating of 200kA, and a Form C dry contact. It has a polyethylene terephthalate enclosure and no filtering.

Where to buy the MERSEN STP240S07M worldwide?

You can source the MERSEN STP240S07M 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 supply genuine MERSEN surge protection devices for international orders.

How to install the MERSEN STP240S07M surge protection device?

Install the MERSEN STP240S07M on a standard DIN rail inside an electrical panel. Ensure the system is de-energized, then connect the L and N conductors per the wiring diagram. The Form C dry contact can be wired to a monitoring system. Follow local electrical codes and the manufacturer's instructions for proper placement and grounding.

Used in

Common applications for MERSEN
Industrial control panels — Mersen USCC1 and USCC2 UL Class CC fuse blocks for DIN rail mounting and finger-safe branch circuit protection.
Motor starters — Mersen ATQ time-delay fuses and DAR0 R-rated fuses for motor overload and short-circuit protection.
Power supplies and instrumentation — Mersen GGM and GSB fast-acting cylindrical fuses for overcurrent protection in compact electronic circuits.
DC systems — Mersen A30QS very-fast-acting square fuses rated 300 V DC for semiconductor and DC equipment protection.
Medium-voltage distribution — Mersen DAR0 R-rated fuses rated 5.08 kV AC for general-purpose overcurrent protection with visual indication.
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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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