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MERSENChase-Nipple External-Mount SPDs

MERSEN Surge Protection Device: Three Phase, 240/120VAC High-Leg DELTA, 240/120 V

The MERSEN Surge Protection Device: Three Phase (SKU 540G32, MPN STXR240H05A) is a Chase-Nipple External-Mount SPD with a non-metallic enclosure. It operates at 240/120VAC High-Leg DELTA with a max. continuing…

SKU 3G-OTH-23219

Brand
MERSEN
Item
Surge Protection Device: Three Phase, 240/120VAC High-Leg DELTA, 240/120 V
Category
Chase-Nipple External-Mount SPDs
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Technical Specifications

MERSEN
Manufacturer Part Number
STXR240H05A
Type
240/120 V, Non-Metallic, 4X
Voltage
240/120VAC High-Leg DELTA
Includes
Remote Audible Alarm
High-Leg DELTA
240/120VAC
Enclosure Material
Non-Metallic
Voltage Protection Rating
600V/1200V (L-N)
Max. Surge Current per Mode
50 kA
Max. Continuing Operating Voltage
240/120 V
View Full Spec Sheet

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

Product Description

The MERSEN Surge Protection Device: Three Phase (SKU 540G32, MPN STXR240H05A) is a Chase-Nipple External-Mount SPD with a non-metallic enclosure. It operates at 240/120VAC High-Leg DELTA with a max. continuing operating voltage of 240/120 V and a voltage protection rating of 600V/1200V (L-N). The unit provides a max. surge current per mode of 50 kA and includes a remote audible alarm.

Frequently Asked Questions

What is the MERSEN STXR240H05A surge protection device used for?

The MERSEN STXR240H05A is a three-phase surge protection device (SPD) designed for 240/120VAC High-Leg DELTA systems. It protects industrial equipment from voltage transients and surges, commonly used in commercial buildings, manufacturing plants, and utility applications where reliable surge suppression is critical.

What are the specifications of the MERSEN STXR240H05A?

The MERSEN STXR240H05A operates at 240/120VAC High-Leg DELTA with a max. continuing operating voltage of 240/120 V. It has a voltage protection rating of 600V/1200V (L-N), max. surge current per mode of 50 kA, a non-metallic enclosure, and includes a remote audible alarm.

Where to buy the MERSEN STXR240H05A worldwide?

You can source the MERSEN STXR240H05A 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 reliable sourcing for this MERSEN SPD.

How to install the MERSEN STXR240H05A surge protection device?

Install the MERSEN STXR240H05A as a chase-nipple external-mount SPD near the service panel. Ensure the system is de-energized, connect phase and neutral conductors per the High-Leg DELTA wiring diagram, and verify the remote audible alarm connection. Follow NEC guidelines and 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 chase-nipple external-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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