MERSEN FUSE 6,9 GRB 70 D11A 0250 PC70GB69V250D1A

High-speed Protistor® fuse designed for reliable protection of power semiconductors and critical circuits, rated 690VAC and 250A with integrated striker indication and DIN 110 blade terminals.

SKU: Z301943Alt SKU: PC70GB69V250D1AMPN: Z301943

List Price £131.96 ex VAT

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Why Choose the Mersen Z301943 Industrial Electrical Protection Component?

The Mersen Z301943 is a specialist industrial electrical protection component identified by the manufacturer reference Z301943. It is intended for maintenance, replacement and spare-parts applications involving compatible Mersen electrical equipment.

Accurate component selection is essential when maintaining industrial power distribution, power conversion and control systems. Using the specified manufacturer reference helps engineers, OEM manufacturers and maintenance professionals preserve the intended electrical performance, physical compatibility and operational reliability of the associated equipment.

The Z301943 part number should be checked against the existing component, equipment parts list or official Mersen technical documentation before ordering. Electrical ratings, protection characteristics, dimensions, mounting arrangements and terminal configurations must be verified before installation.

Key Advantages

Genuine Mersen industrial electrical protection component.
Clearly identified by manufacturer reference Z301943.
Suitable for compatible industrial electrical equipment.
Supports planned maintenance, repair and replacement procedures.
Helps simplify component identification and inventory management.
Suitable for professional industrial and OEM applications.

Key Features

Mersen branded electrical component.
Manufacturer part number: Z301943.
Intended for compatible Mersen electrical protection equipment.
Suitable for maintenance and replacement requirements.
Traceable manufacturer reference for accurate procurement.
Designed for professional electrical environments.
Suitable for industrial, commercial and OEM systems.
Technical verification and professional installation recommended.

Reliable Protection for Industrial Electrical Equipment

Industrial electrical protection components help reduce the risk of equipment damage caused by excessive current, short circuits and other electrical faults. Correct specification is essential because the selected component must match both the electrical requirements and the physical configuration of the installation.

The Mersen Z301943 provides a clearly identifiable replacement reference for compatible systems. Before fitting the component, the electrical supply should be safely isolated and all markings, dimensions, connections and ratings should be compared with the existing part and the relevant equipment documentation.

Typical Applications

Industrial electrical protection systems.
Power distribution and switchgear equipment.
Motor control and variable speed drive systems.
Power conversion and industrial power supply equipment.
Automation machinery and electrical control panels.
OEM maintenance and critical spare-parts inventories.

Technical Specifications

Item number	Z301943
Catalogue No	PC70GB69V250D1A
Description	Square Body High-Speed Fuse Protistor® Size 70 gR 690VAC IEC 250A With Striker DIN 110 Blades
EAN/UPC Code	3605340348873
Rated voltage AC IEC	690 V
Ampere Rating	250 A
RoHS Compliant	Yes
AC or DC	AC
Speed/Characteristic	gR
Fuse Size	70
Mounting	Bolted
Clearing I2t At Rated Voltage	79000 A²s
Melting I2t	13448 A²s
AC Max I.R./Breaking Capacity	I1: 150 kA
Indication System	Yes
Indication System Type	Striker
Connection/Terminal Material	Silver-Plated Copper
Connection/Terminal Type	DIN 110 Blades
Product Width	39 mm
Product Length	133.4 mm
Product Height	46 mm
Sell Pack Quantity	3 EA
Sell Pack Weight	1.0899 kg
Sell Pack Width	130 mm
Sell Pack Length	50 mm
Sell Pack Height	140 mm
Product group	Semiconductor Protection Fuses
Body/Insulating Material	Ceramic
Product Weight	0.3633 kg
Power Dissipation at Rated Current Value	40 W
HS Code	85361090
Country of Manufacture	France
Fuse Type	Semiconductor
Fuse Class	gR
Voltage	690 V

Frequently Asked Questions

What is the Mersen Z301943?

The Mersen Z301943 is an industrial electrical protection component identified by the manufacturer part number Z301943 for use with compatible Mersen equipment.

How can I confirm that the Z301943 is suitable for my equipment?

Compare the complete part number, electrical ratings, physical dimensions, mounting method and terminal arrangement with the existing component and the applicable equipment documentation.

Why should the specifications be checked before installation?

The current rating, voltage rating, protection characteristic, breaking capacity and physical configuration must match the application to provide appropriate protection and safe operation.

Who should install the Mersen Z301943?

The component should be installed by a suitably qualified electrical engineer or maintenance technician following appropriate isolation, testing and electrical safety procedures.

Where is the Mersen Z301943 typically used?

It may be used in compatible industrial control panels, power distribution equipment, power conversion systems, machinery and other professional electrical installations.

Trusted by Industrial Electrical Professionals

Mersen electrical protection products are used by engineers, OEM manufacturers and maintenance professionals to support dependable equipment protection and reliable operation in demanding industrial environments.

Item number	Z301943
Catalogue No	PC70GB69V250D1A
Description	Square Body High-Speed Fuse Protistor® Size 70 gR 690VAC IEC 250A With Striker DIN 110 Blades
EAN/UPC Code	3605340348873
Rated voltage AC IEC	690 V
Ampere Rating	250 A
RoHS Compliant	Yes
AC or DC	AC
Speed/Characteristic	gR
Fuse Size	70
Mounting	Bolted
Clearing I2t At Rated Voltage	79000 A²s
Melting I2t	13448 A²s
AC Max I.R./Breaking Capacity	I1: 150 kA
Indication System	Yes
Indication System Type	Striker
Connection/Terminal Material	Silver-Plated Copper
Connection/Terminal Type	DIN 110 Blades
Product Width	39 mm
Product Length	133.4 mm
Product Height	46 mm
Sell Pack Quantity	3 EA
Sell Pack Weight	1.0899 kg
Sell Pack Width	130 mm
Sell Pack Length	50 mm
Sell Pack Height	140 mm
Product group	Semiconductor Protection Fuses
Body/Insulating Material	Ceramic
Product Weight	0.3633 kg
Power Dissipation at Rated Current Value	40 W
HS Code	85361090
Country of Manufacture	France
Fuse Type	Semiconductor
Fuse Class	gR
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.

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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.

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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

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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.

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

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