Engineered for demanding industrial applications, the Square Body High-Speed Fuse Protistor® PC72UD11C800TF delivers rapid circuit protection for semiconductor devices up to 800A, with high interrupting capability at 1100VAC (IEC) and 1200VAC (UL). Featuring striker flush ends and metric threads for seamless integration.
£235.63
The Mersen H300502 is a professional-grade electrical protection component intended for use with compatible industrial power distribution, power conversion and machinery control equipment. Manufactured by Mersen, it is suitable for applications where dependable protection, accurate component identification and reliable system operation are essential.
The H300502 manufacturer reference helps engineers, panel builders, maintenance professionals and purchasing teams identify the required component accurately. Selecting the correct Mersen part helps preserve the electrical and mechanical characteristics specified for the original installation while reducing the risk of compatibility issues caused by unsuitable replacement products.
Before purchasing or installing the Mersen H300502, its rated voltage, rated current, protection category, breaking capacity, terminal arrangement and physical dimensions should be confirmed against the existing component and current Mersen technical documentation. Installation should only proceed when all relevant electrical and mechanical specifications match the intended application.
Correctly selected electrical protection components help limit the effects of short circuits, overcurrents and other abnormal electrical conditions. They can help protect valuable machinery, conductors, control systems and power electronic equipment while reducing the likelihood of unplanned downtime.
The Mersen H300502 should be matched using its complete manufacturer reference and installed by a suitably qualified electrical professional. The operating voltage, current, protection characteristics, breaking capacity, mounting arrangement and environmental conditions must be verified before the equipment is energised.
| Item number | H300502 |
|---|---|
| Catalogue No | PC72UD11C800TF |
| Description | Square Body High-Speed Fuse Protistor® Size 72 aR 1100VAC IEC 1200VAC UL 800A With Striker Flush ends metric threads |
| EAN/UPC Code | 3605340329414 |
| Rated voltage AC UL | 1200 V |
| Rated voltage AC IEC | 1100 V |
| Ampere Rating | 800 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 72 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 1400 kA²s |
| Melting I2t | 215.1 kA²s |
| AC Max I.R./Breaking Capacity | I1: 150 kA |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Brass |
| Connection/Terminal Type | Flush ends |
| Product Width | 59 mm |
| Product Length | 74 mm |
| Product Height | 63 mm |
| Sell Pack Quantity | 1 EA |
| Sell Pack Weight | 0.8 kg |
| Sell Pack Width | 110 mm |
| Sell Pack Length | 130 mm |
| Sell Pack Height | 80 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.8 kg |
| Power Dissipation at Rated Current Value | 146 W |
| HS Code | 85351000 |
The Mersen H300502 is an electrical protection component intended for use with compatible industrial power, machinery and electrical control equipment.
Compare the complete H300502 part number, electrical ratings, protection characteristics, terminal configuration and dimensions with the existing component and official Mersen documentation.
It may be used as a replacement where the original equipment documentation specifies the same Mersen reference and matching electrical and mechanical characteristics.
Confirm the rated voltage, rated current, protection category, breaking capacity, terminal arrangement, dimensions and operating environment before installation.
The component should be selected and installed by a suitably qualified electrical professional in accordance with the equipment instructions and applicable electrical regulations.
Mersen electrical protection products are used by engineers, panel builders, equipment manufacturers and maintenance professionals to support dependable operation in industrial power and control systems.
● 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...