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MERSEN FUSE 30A J 2P ULTRASAFE US3J2

MERSEN FUSE 30A J 2P ULTRASAFE US3J2

Mersen US3J2 UltraSafe two-pole Class J fuse holder rated 30 A and 600 V AC/DC with IP20 finger-safe protection and DIN rail mounting.

SKU: US3J2MPN: US3J2
Price
List Price £90.63 ex VAT
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£90.63
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£90.63

Why Choose the Mersen US3J2 UltraSafe™ Class J Fuse Holder?

The Mersen US3J2 is a premium two-pole UltraSafe™ Class J fuse holder engineered to provide dependable overcurrent protection for industrial power distribution systems. Designed to accept 30 A Class J fuses or compatible 22 × 58 mm IEC cylindrical fuse links, it combines compact DIN rail mounting with industry-leading safety features for modern control panels and switchboards.

Part of the trusted Mersen UltraSafe™ US3J series, the US3J2 features an IP20 finger-safe design, durable polyamide housing and a unique latch mechanism that remains open during fuse replacement, making maintenance faster and safer. Its compact footprint allows efficient installation where panel space is limited.

Rated for 30 A with 600 V AC and 600 V DC operation, the US3J2 delivers a 200 kA short-circuit current rating when used with approved Class J fuses. This standard version does not include blown-fuse indication, making it ideal for installations where remote or visual indication is not required.

Key Advantages

  • Compact two-pole Class J fuse holder for industrial applications.
  • Compatible with 30 A Class J fuses.
  • 600 V AC / 600 V DC rated operation.
  • 200 kA short-circuit current rating.
  • IP20 finger-safe construction enhances operator safety.
  • 35 mm DIN rail mounting for rapid installation.

Key Features

  • Mersen UltraSafe™ US3J series.
  • Two-pole fuse holder.
  • 30 A maximum fuse rating.
  • 600 V AC UL rated voltage.
  • 600 V DC UL rated voltage.
  • Compatible with AJT, A4J and HSJ Class J fuses.
  • Compatible with 22 × 58 mm IEC cylindrical fuse links.
  • 200 kA SCCR.
  • Pressure-plate terminals.
  • DIN rail mounting with lockable open position.

Reliable Protection for Industrial Power Distribution

The Mersen US3J2 provides dependable overcurrent protection for two independent Class J fuse circuits within a compact modular assembly. Its finger-safe housing reduces the risk of accidental contact with live components whilst allowing fast fuse replacement during routine maintenance.

Designed for industrial control panels, OEM machinery and power distribution equipment, the US3J2 combines high interrupting capacity with durable construction to provide long service life in demanding industrial environments.

Typical Applications

  • Industrial control panels.
  • Power distribution systems.
  • Motor protection circuits.
  • Heating and lighting circuits.
  • OEM machinery.
  • Industrial automation equipment.

Technical Specifications

Current 30 A
Manufacturer Mersen
Series UltraSafe™ US3J
Model US3J2
Product type Class J modular fuse holder
Fuse class Class J
Number of poles 2
Maximum fuse rating 30 A
Rated voltage AC 600 V UL
Rated voltage DC 600 V UL
Frequency 50 / 60 Hz
Short-circuit current rating 200 kA
Compatible fuse size 22 × 58 mm IEC (non-UL application)
Terminal type Pressure plate
Housing material Polyamide
Protection rating IP20
Mounting type 35 mm DIN rail
Indicator No
Product weight Approx. 0.44 kg
EAN / UPC 0782001307721
HS Code 85369095
Country of Manufacture China
Poles 2-pole
Device Type Fuse base / holder
Fuse Type UL class
Fuse Size 22x58 mm
Voltage 600 V

Frequently Asked Questions

What is the Mersen US3J2 used for?

The US3J2 is a two-pole UltraSafe™ fuse holder designed for protecting industrial electrical circuits using 30 A Class J fuses.

Which fuses are compatible with the US3J2?

It is designed for Mersen AJT, A4J and HSJ Class J fuses and can also accept compatible 22 × 58 mm IEC cylindrical fuse links.

What are the voltage and current ratings?

The US3J2 is rated for 30 A with operating voltages up to 600 V AC and 600 V DC.

Does the US3J2 include blown-fuse indication?

No. The US3J2 is the standard version without a blown-fuse indicator. The indicator version is the US3J2I.

How is the US3J2 installed?

It is designed to snap onto a standard 35 mm DIN rail and uses pressure-plate terminals for secure electrical connections.

Trusted by Industrial Engineers Worldwide

Mersen UltraSafe™ Class J fuse holders are trusted worldwide by OEMs, panel builders and industrial engineers for dependable overcurrent protection, finger-safe operation and long-term reliability.

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