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MERSEN Fuse: Class K5, OTS Series, Fast-Acting, 400 A, 600 V AC, 300 V DC - Fast-Acting Blade Fuses
MERSENFast-Acting Blade Fuses

MERSEN Fuse: Class K5, OTS Series, Fast-Acting, 400 A, 600 V AC, 300 V DC

The MERSEN OTS Series Class K5 Fast-Acting Blade Fuse (MPN OTS400) is a non-indicating fuse rated at 400 A, 600 V AC, and 300 V DC. This industrial fuse is designed for fast-acting overcurrent protection in…

SKU 3G-OTH-25182

Also listed as: OTS 400 · OTS-400

Brand
MERSEN
Item
Fuse: Class K5, OTS Series, Fast-Acting, 400 A, 600 V AC, 300 V DC
Category
Fast-Acting Blade Fuses
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Local availability & support

Delivery
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
OTS400
Series
OTS
Type
OTS Series, Fast-Acting, 400 A, Non-Indicating
AC
600 V
DC
300 V

Technical Documents

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

Product Description

The MERSEN OTS Series Class K5 Fast-Acting Blade Fuse (MPN OTS400) is a non-indicating fuse rated at 400 A, 600 V AC, and 300 V DC. This industrial fuse is designed for fast-acting overcurrent protection in electrical circuits.

Frequently Asked Questions

What is the MERSEN OTS400 fuse used for?

The MERSEN OTS400 is a Class K5 fast-acting blade fuse rated 400 A, 600 V AC, and 300 V DC. It provides overcurrent protection in industrial electrical circuits, such as motor control centers, switchgear, and distribution panels, where rapid fault clearing is required.

What are the specifications of the MERSEN OTS400 fuse?

The MERSEN OTS400 is a non-indicating, fast-acting blade fuse from the OTS Series. It is rated 400 A, 600 V AC, and 300 V DC. The manufacturer part number is OTS400. It is designed for Class K5 applications in industrial power systems.

Where to buy the MERSEN OTS400 fuse worldwide?

3G Electric supplies the MERSEN OTS400 fuse to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this fast-acting blade fuse for industrial overcurrent protection.

How to select the correct MERSEN OTS fuse for an application?

To select the correct MERSEN OTS fuse, match the voltage rating (600 V AC or 300 V DC) and current rating (400 A for the OTS400) to your circuit requirements. Ensure the fast-acting characteristic suits your load type. Consult a qualified engineer for coordination studies.

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 fast-acting blade fuses. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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