MERSEN FUSE 6,9 URD 33 E F 0800 6,9URD33EF0800

High-speed Protistor® fuse with open slot blades and striker indication, rated 800A at 690VAC IEC and 700VAC UL, designed for semiconductor protection and industrial power applications.

SKU: D300222Alt SKU: PC33UD69V800EFMPN: D300222

List Price £237.39 ex VAT

Your Price (ex VAT)

£237.39

Manufacturer Lead Time Please contact us for a delivery time before you order

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Manufacturer Lead Time

£237.39

Why Choose the Mersen D300222 Industrial Electrical Component?

The Mersen D300222 is a genuine Mersen industrial electrical component intended for professional maintenance, repair and OEM replacement applications. Identified by the exact manufacturer reference D300222, it helps engineers, maintenance teams and procurement specialists source the correct component for compatible electrical equipment and industrial systems.

Using the manufacturer-specified replacement part helps preserve equipment compatibility, operational reliability and long-term system performance. The Mersen D300222 should be selected where the existing component, equipment manual, approved bill of materials or technical documentation specifies this exact product reference.

Before ordering or installation, the D300222 should be compared with the original component label and relevant Mersen documentation. Electrical ratings, dimensions, terminal configuration and mounting requirements must be confirmed for the intended equipment and application.

Key Advantages

Genuine Mersen industrial replacement component.
Clearly identified by manufacturer reference D300222.
Suitable for professional maintenance, repair and replacement projects.
Supports accurate procurement for compatible industrial equipment.
Helps maintain the original equipment specification.
Suitable for OEM machinery, refurbishment and preventative maintenance.

Key Features

Mersen manufacturer part number D300222.
Industrial-grade electrical component.
Designed for use with correctly specified compatible equipment.
Suitable for maintenance and OEM replacement applications.
Provides precise manufacturer identification for procurement.
Supports dependable servicing of industrial electrical systems.
Intended for installation by qualified personnel.
Technical compatibility should be confirmed before use.

Dependable Component Sourcing for Industrial Maintenance

Correct component identification is essential when servicing industrial electrical equipment. Matching the complete manufacturer part number helps reduce the risk of ordering an incompatible replacement and supports efficient maintenance, repair and inventory management.

The Mersen D300222 should be checked against the existing component, equipment manual or approved parts list before installation. Correct specification and professional installation help minimise equipment downtime while supporting safe and reliable operation.

Typical Applications

Industrial electrical equipment maintenance.
OEM machinery repair and refurbishment.
Manufacturing and production systems.
Electrical control panels and assemblies.
Preventative maintenance programmes.
Replacement of correctly matched Mersen components.

Technical Specifications

Item number	D300222
Catalogue No	PC33UD69V800EF
Description	Square Body High-Speed Fuse Protistor® Size 33 aR 690VAC IEC 700VAC UL 800A With Striker Open Slot Blades
EAN/UPC Code	3605340325171
Rated voltage AC UL	700 V
Rated voltage AC IEC	690 V
Ampere Rating	800 A
RoHS Compliant	Yes
AC or DC	AC
Speed/Characteristic	aR
Fuse Size	33
Mounting	Bolted
Clearing I2t At Rated Voltage	540 kA²s
Melting I2t	93 kA²s
AC Max I.R./Breaking Capacity	I1: 200 kA
Design Details	Standard Terminal
Indication System	Yes
Indication System Type	Striker
Connection/Terminal Material	Silver-Plated Copper
Connection/Terminal Type	Open Slot Blades
Product Width	73 mm
Product Length	126 mm
Product Height	78.5 mm
Sell Pack Quantity	3 EA
Sell Pack Weight	2.556 kg
Sell Pack Width	160 mm
Sell Pack Length	245 mm
Sell Pack Height	100 mm
Product group	Semiconductor Protection Fuses
Body/Insulating Material	Ceramic
Product Weight	0.852 kg
Power Dissipation at Rated Current Value	130 W
HS Code	85361090
Fuse Type	Semiconductor
Fuse Class	aR
Voltage	690 V

Frequently Asked Questions

What is the Mersen D300222?

The Mersen D300222 is an industrial electrical component identified by the genuine Mersen manufacturer part number D300222.

How can I confirm that the D300222 is compatible with my equipment?

Compare the complete part number with the existing component and consult the equipment manual, approved parts list or official Mersen technical documentation.

Is the Mersen D300222 suitable for industrial use?

It is intended for professional industrial applications when correctly specified for the equipment, electrical ratings and operating conditions.

Why is the exact manufacturer part number important?

The exact part number helps identify the required component and reduces the risk of purchasing an incompatible replacement.

Who should install the Mersen D300222?

Installation should be completed by a suitably qualified electrical engineer or technician in accordance with the equipment instructions and applicable safety requirements.

Trusted Industrial Components from Mersen

Mersen products are used by electrical engineers, OEM manufacturers and industrial maintenance professionals requiring dependable components for electrical equipment, machinery and critical industrial systems.

Item number	D300222
Catalogue No	PC33UD69V800EF
Description	Square Body High-Speed Fuse Protistor® Size 33 aR 690VAC IEC 700VAC UL 800A With Striker Open Slot Blades
EAN/UPC Code	3605340325171
Rated voltage AC UL	700 V
Rated voltage AC IEC	690 V
Ampere Rating	800 A
RoHS Compliant	Yes
AC or DC	AC
Speed/Characteristic	aR
Fuse Size	33
Mounting	Bolted
Clearing I2t At Rated Voltage	540 kA²s
Melting I2t	93 kA²s
AC Max I.R./Breaking Capacity	I1: 200 kA
Design Details	Standard Terminal
Indication System	Yes
Indication System Type	Striker
Connection/Terminal Material	Silver-Plated Copper
Connection/Terminal Type	Open Slot Blades
Product Width	73 mm
Product Length	126 mm
Product Height	78.5 mm
Sell Pack Quantity	3 EA
Sell Pack Weight	2.556 kg
Sell Pack Width	160 mm
Sell Pack Length	245 mm
Sell Pack Height	100 mm
Product group	Semiconductor Protection Fuses
Body/Insulating Material	Ceramic
Product Weight	0.852 kg
Power Dissipation at Rated Current Value	130 W
HS Code	85361090
Fuse Type	Semiconductor
Fuse Class	aR
Voltage	690 V

UK delivery

Delivery options

Free UK delivery on orders over £200 ex VAT. Order in-stock items before 2pm Monday to Friday for next-day delivery.

This product Lead time on request

Please contact us for a delivery time before you order

Standard delivery

£8 ex VAT · free over £200

UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.

Heavier items may be charged at a weight-based or pallet rate, shown at checkout.

Collect from our showroom

Mon–Fri, 8am–5pm

Order and pay online, then collect from our showroom.

Please allow 15–30 minutes after ordering for us to prepare your order.

Northern Ireland, ROI & export

Priced at checkout

We deliver to Northern Ireland, the Republic of Ireland and overseas.

Delivery is calculated at checkout based on your destination.

Orders with mixed availability

Shipped complete

If part of your order is on a lead time, we hold it and send everything together.

Need the in-stock items sooner? Ask us and we can split the delivery.

Business customer returns

Returns & order support

Need to return an item? Find the guidance for your order below, then contact our team before sending anything back.

Stocked items

Request within 30 days

Changed your mind or ordered the wrong item? Request a return within 30 days of receipt. There is no restocking charge.

Items must be unused, in resalable condition and in their original packaging, and returns need our approval first. Return carriage is at your cost, and the original delivery charge is not refunded.

Faulty or damaged items

Tell us as soon as possible

Faulty, damaged on delivery or the wrong product supplied? Contact our team as soon as possible with the details.

We will review the issue and arrange an appropriate resolution under our terms and conditions and your statutory rights.

Made-to-order items

Manufacturer approval needed

Manufactured, configured and special-order products can only be returned with the manufacturer’s approval. Any handling charge is agreed with you when you request the return.

This does not affect claims for faulty goods or items that do not meet the agreed specification.

LED Controls showroom with electrical products on display

Let’s get your return sorted.

Send your order number, product details and reason for return. For faults or delivery damage, include photographs if available. We will confirm the next steps.

Email returns team 01706 242050

The 30-day return request period applies to change-of-mind returns for stocked items. It does not limit your statutory rights for faulty or non-conforming goods.

● Service Agreements

Credit Accounts

Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.

Priority sourcing and supply support

Flexible payment terms for qualifying organisations

Support for engineering, maintenance, and operations

500 +

Stock lines ready to ship

1,000 +

Same day dispatches

3500 +

Customers supported

28 Trusted Manfacturers

● frequently asked questions

Common questions about our products and support

At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.

What product ranges do you supply

We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.

Can you help specify the correct part?

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Do you have stock for urgent orders?

What are your delivery times and costs?

What about warranties, returns and faulty items?

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