Why Choose the Mersen Q076650 Protistor® High Speed Fuse?
The Mersen Q076650 is a premium Protistor® British Standard high-speed semiconductor fuse engineered to provide rapid protection for sensitive power semiconductor devices against damaging short-circuit and overcurrent conditions. Designed in accordance with IEC 60269-1 and IEC 60269-4, it delivers exceptional fault interruption for demanding industrial power electronic applications.
As part of the trusted Mersen Protistor® BS88-4 17 × 27 mm series, the Q076650 is specifically developed for protecting variable frequency drives, UPS systems, inverters, converters and other equipment incorporating sensitive semiconductor devices. Its high-speed operating characteristic minimises let-through energy, helping to reduce equipment damage and improve system reliability.
Featuring a 16 A current rating, 250 V AC IEC rating and 300 V DC UL rating, this British Standard fuse-link provides dependable semiconductor protection for industrial automation, motor control and power conversion systems.
Key Advantages
High-speed semiconductor protection fuse for industrial applications.
16 A current rating with 250 V AC IEC operation.
aR operating characteristic for protecting power semiconductors.
High 160 kA breaking capacity.
British Standard 17 × 27 mm fuse-link.
Suitable for drives, UPS systems, converters and industrial inverters.
Key Features
Mersen Protistor® series.
Catalogue number: BS17US25V16.
16 A rated current.
250 V AC IEC / 300 V DC UL rated voltage.
aR high-speed semiconductor protection.
17 × 27 mm British Standard construction.
L bracket bolted connections.
Ceramic body with copper terminals.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are engineered to protect expensive power electronic components by interrupting fault currents before excessive thermal or electrical stress can occur. Their ultra-fast operating characteristics help extend equipment life while reducing maintenance costs and production downtime.
The Mersen Protistor® range is widely specified by OEMs, panel builders and industrial engineers for protecting variable speed drives, power converters, UPS systems and renewable energy equipment where reliable semiconductor protection is essential.
Typical Applications
Variable frequency drives (VFDs).
Industrial power converters.
UPS systems.
Industrial inverter systems.
Motor control equipment.
Industrial automation and control panels.
Technical Specifications
Item number
Q076650
Catalogue No
BS17US25V16
Description
British Standard fuse-link Protistor® 17x27 aR 250V AC UL 16A
EAN/UPC Code
3605340019490
Rated voltage AC UL
250 V
Rated voltage DC UL
300 V
Rated voltage AC IEC
250 V
Ampere Rating
16 A
RoHS Compliant
Yes
AC or DC
AC
Speed/Characteristic
aR
Fuse Size
17x27
Mounting
Bolted
Clearing I2t At Rated Voltage
59 A²s
Melting I2t
11.2 A²s
Connection/Terminal Material
Copper
Connection/Terminal Type
L Brackets
Product Diameter
18.5 mm
Product Length
54.4 mm
Sell Pack Quantity
10 EA
Sell Pack Weight
0.276 kg
Sell Pack Width
68 mm
Sell Pack Length
188 mm
Sell Pack Height
24 mm
Product group
Semiconductor Protection Fuses
Body/Insulating Material
Ceramic
Product Weight
0.0276 kg
Power Dissipation at Rated Current Value
3 W
HS Code
85361050
Country of Manufacture
India
Frequently Asked Questions
What is the Mersen Q076650 used for?
The Mersen Q076650 is designed to protect sensitive semiconductor devices used in drives, converters, UPS systems and other industrial power electronic equipment.
What is the current rating of the Q076650?
The fuse has a 16 A current rating.
What voltage is this fuse rated for?
The Q076650 is rated for 250 V AC (IEC) and 300 V DC (UL).
What type of protection does this fuse provide?
It provides aR high-speed semiconductor protection for power electronic devices including IGBTs, diodes and thyristors.
Where is the Q076650 typically installed?
It is commonly installed in variable frequency drives, converters, UPS systems, inverter equipment and industrial automation systems requiring fast semiconductor protection.
Trusted for Industrial Power Protection
Mersen Protistor® semiconductor fuses are trusted worldwide by machine builders and industrial engineers to deliver fast, dependable protection for critical power electronic equipment.
Item number
Q076650
Catalogue No
BS17US25V16
Description
British Standard fuse-link Protistor® 17x27 aR 250V AC UL 16A
EAN/UPC Code
3605340019490
Rated voltage AC UL
250 V
Rated voltage DC UL
300 V
Rated voltage AC IEC
250 V
Ampere Rating
16 A
RoHS Compliant
Yes
AC or DC
AC
Speed/Characteristic
aR
Fuse Size
17x27
Mounting
Bolted
Clearing I2t At Rated Voltage
59 A²s
Melting I2t
11.2 A²s
Connection/Terminal Material
Copper
Connection/Terminal Type
L Brackets
Product Diameter
18.5 mm
Product Length
54.4 mm
Sell Pack Quantity
10 EA
Sell Pack Weight
0.276 kg
Sell Pack Width
68 mm
Sell Pack Length
188 mm
Sell Pack Height
24 mm
Product group
Semiconductor Protection Fuses
Body/Insulating Material
Ceramic
Product Weight
0.0276 kg
Power Dissipation at Rated Current Value
3 W
HS Code
85361050
Country of Manufacture
India
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
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?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Do you have stock for urgent orders?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
What are your delivery times and costs?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
What about warranties, returns and faulty items?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...