High-speed Protistor® fuse with aR characteristic, rated 100A at 690VAC IEC and 700VAC UL, featuring ceramic body, striker indication, and DIN 110 silver-plated copper blades for industrial semiconductor protection.
£89.81
The Mersen S300120 is an industrial electrical protection component intended for use within a compatible Mersen fuse, power distribution or protection assembly. It is suitable for professional maintenance, replacement and OEM applications where accurate component identification and dependable system compatibility are essential.
Mersen electrical protection products are used throughout industrial machinery, automation, motor control, power conversion and electrical distribution systems. Selecting the exact S300120 manufacturer reference helps preserve the mechanical fit, electrical performance and protection coordination specified for the original equipment.
Before ordering or installing the Mersen S300120, its precise product type, electrical ratings, dimensions, mounting method and connection arrangement should be verified against the original component, equipment manual or official Mersen documentation. Components with a similar appearance may have different operating characteristics and should not be considered interchangeable without confirmation.
Correctly selected electrical protection components help reduce the risk of equipment damage caused by overloads, short circuits and other abnormal electrical conditions. They also support effective fault isolation, safer maintenance and improved continuity of operation within industrial machinery and power systems.
The Mersen S300120 should only be installed where its manufacturer reference and technical characteristics correspond with the approved equipment specification. The voltage rating, current rating, physical dimensions, mounting arrangement and connection type should always be checked before replacing an existing component.
| Current | 11 A |
|---|---|
| Item number | S300120 |
| Catalogue No | PC30UD69V100D1A |
| Description | Square Body High-Speed Fuse Protistor® Size 30 aR 690VAC IEC 700VAC UL 100A With Striker DIN 110 Blades |
| EAN/UPC Code | 3605340323658 |
| Rated voltage AC UL | 700 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 100 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 30 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 2.7 kA²s |
| Melting I2t | 0.47 kA²s |
| AC Max I.R./Breaking Capacity | I1: 200 kA |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Copper |
| Connection/Terminal Type | DIN 110 Blades |
| Product Width | 40 mm |
| Product Length | 134.6 mm |
| Product Height | 48 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 0.8949 kg |
| Sell Pack Width | 135 mm |
| Sell Pack Length | 145 mm |
| Sell Pack Height | 55 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.2983 kg |
| Power Dissipation at Rated Current Value | 26 W |
| HS Code | 85361090 |
| Country of Manufacture | France |
The Mersen S300120 is intended for use within a compatible industrial electrical protection assembly. Its precise function should be confirmed against the original equipment documentation or official Mersen technical information.
It should only be used as a direct replacement when the complete manufacturer reference, electrical ratings, dimensions, mounting method and connection arrangement match the original component.
Depending on the approved system specification, it may be installed in compatible electrical panels, industrial machinery, automation equipment or power protection assemblies.
Check the complete part number, product label, voltage and current requirements, physical dimensions, mounting arrangement and connection type against the relevant equipment documentation.
The component should be selected and installed by a suitably qualified electrical professional in accordance with the equipment instructions and applicable electrical safety requirements.
Mersen electrical protection technologies are widely specified by panel builders, maintenance engineers and equipment manufacturers for dependable performance in industrial distribution, automation and machinery applications.
● 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.
● frequently asked questions
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.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
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.
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.
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.
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.
● latest blog
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...