Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
⌕
RFQ CartGet a QuoteSign inSign up
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 300 A, 250 V AC, 250 V DC - Fast-Acting Blade Fuses
MERSENFast-Acting Blade Fuses

MERSEN Fuse: Class K5, OT Series, Fast-Acting, 300 A, 250 V AC, 250 V DC

The MERSEN OT Series Class K5 Fast-Acting Blade Fuse (MPN OT300) is a non-indicating fuse rated for 300 A at 250 V AC and 250 V DC. This industrial fuse is designed for overcurrent protection in electrical circuits.

SKU 3G-OTH-25466

Brand
MERSEN
Item
Fuse: Class K5, OT Series, Fast-Acting, 300 A, 250 V AC, 250 V DC
Category
Fast-Acting Blade Fuses
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

MERSEN
Manufacturer Part Number
OT300
Series
OT
Type
OT Series, Fast-Acting, 300 A, Non-Indicating
AC
250 V
DC
250 V
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The MERSEN OT Series Class K5 Fast-Acting Blade Fuse (MPN OT300) is a non-indicating fuse rated for 300 A at 250 V AC and 250 V DC. This industrial fuse is designed for overcurrent protection in electrical circuits.

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
MERSEN Fuse: Class K5, OTS Series, Fast-Acting, 300 A, 600 V AC, 300 V DC, Non-Indicating (MPN OTS300). Key specifications — Series: OTS; Brand: MERSEN; Manufacturer Part Number: OTS300.
MERSEN
MERSEN Fuse: Class K5, OTS Series, Fast-Acting, 300 A, 600 V AC, 300 V DC, Non-Indicating (MPN OTS300). Key specifications — Series: OTS; Brand: MERSEN; Manufacturer Part Number: OTS300.
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 150 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT150). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT150.
MERSEN
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 150 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT150). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT150.
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 100 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT100). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT100.
MERSEN
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 100 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT100). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT100.
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 90 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT90). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT90.
MERSEN
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 90 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT90). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT90.
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 80 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT80). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT80.
MERSEN
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 80 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT80). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT80.
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 175 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT175). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT175.
MERSEN
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 175 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT175). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT175.

More from MERSEN

View all MERSEN parts →
MERSEN Fuse: Class K5, OTS Series, Fast-Acting, 70 A, 600 V AC, 300 V DC, Non-Indicating (MPN OTS70). Key specifications — Series: OTS; Brand: MERSEN; Manufacturer Part Number: OTS70.
MERSEN
MERSEN Fuse: Class K5, OTS Series, Fast-Acting, 70 A, 600 V AC, 300 V DC, Non-Indicating (MPN OTS70). Key specifications — Series: OTS; Brand: MERSEN; Manufacturer Part Number: OTS70.
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 400 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT400). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT400.
MERSEN
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 400 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT400). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT400.
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 200 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT200). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT200.
MERSEN
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 200 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT200). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT200.
MERSEN Fuse: Class K5, OTS Series, Fast-Acting, 90 A, 600 V AC, 300 V DC, Non-Indicating (MPN OTS90). Key specifications — Series: OTS; Brand: MERSEN; Manufacturer Part Number: OTS90.
MERSEN
MERSEN Fuse: Class K5, OTS Series, Fast-Acting, 90 A, 600 V AC, 300 V DC, Non-Indicating (MPN OTS90). Key specifications — Series: OTS; Brand: MERSEN; Manufacturer Part Number: OTS90.
Solar Fuse: HP10M Series, Gen Purpose, 1 A, 1 kV DC (MPN HP10M1-V). Key specifications — Series: HP10M; Brand: MERSEN.
MERSEN
Solar Fuse: HP10M Series, Gen Purpose, 1 A, 1 kV DC (MPN HP10M1-V). Key specifications — Series: HP10M; Brand: MERSEN.
MERSEN Fuse: Class K5, OTS Series, Fast-Acting, 150 A, 600 V AC, 300 V DC, Non-Indicating (MPN OTS150). Key specifications — Series: OTS; Brand: MERSEN; Manufacturer Part Number: OTS150.
MERSEN
MERSEN Fuse: Class K5, OTS Series, Fast-Acting, 150 A, 600 V AC, 300 V DC, Non-Indicating (MPN OTS150). Key specifications — Series: OTS; Brand: MERSEN; Manufacturer Part Number: OTS150.
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 600 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT600). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT600.
MERSEN
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 600 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT600). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT600.
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 350 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT350). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT350.
MERSEN
MERSEN Fuse: Class K5, OT Series, Fast-Acting, 350 A, 250 V AC, 250 V DC, Non-Indicating (MPN OT350). Key specifications — Series: OT; Brand: MERSEN; Manufacturer Part Number: OT350.