High-speed aR characteristic fuse with 125A rating, ceramic body, and striker indication system for industrial semiconductor protection applications.
£106.18
The Mersen Y300539 is a manufacturer-referenced industrial electrical protection component intended for use with compatible equipment and fuse assemblies. Its distinctive Y300539 reference enables engineers, panel builders, purchasing teams and maintenance professionals to identify the required Mersen part accurately when sourcing a replacement.
Using the specified manufacturer reference is particularly important in industrial electrical systems, where visually similar components can have significantly different electrical characteristics, operating curves, dimensions and terminal arrangements. Correct identification helps maintain compatibility with the original assembly and supports reliable equipment servicing.
Detailed product-specific technical information for the Mersen Y300539 is not readily available in public documentation. The precise component type, current rating, voltage rating, utilisation category, breaking capacity, connection format and dimensions must therefore be verified using the original product label, equipment parts list or current Mersen technical documentation before ordering or installation.
Electrical protection components must be selected according to their complete technical specification rather than appearance alone. Current rating, voltage rating, fault-interruption capability, operating speed and physical configuration can all affect whether a component is suitable for a particular circuit or assembly.
Before installing the Mersen Y300539, compare its complete reference and verified technical data with the existing component and the associated equipment documentation. Any proposed alternative should provide equivalent electrical performance, dimensions, connection arrangements and applicable approvals.
| Current | 11 A |
|---|---|
| Item number | Y300539 |
| Catalogue No | PC70UD13C125D1A |
| Description | Square Body High-Speed Fuse Protistor® Size 70 aR 1250VAC IEC 1300VAC UL 125A With Striker DIN 110 Blades |
| EAN/UPC Code | 3605340329971 |
| Rated voltage AC UL | 1300 V |
| Rated voltage AC IEC | 1250 V |
| Ampere Rating | 125 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 70 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 10500 A²s |
| Melting I2t | 1310 A²s |
| AC Max I.R./Breaking Capacity | I1: 126 kA |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Copper |
| Connection/Terminal Type | DIN 110 Blades |
| Product Width | 39.8 mm |
| Product Length | 133.4 mm |
| Product Height | 49.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.0899 kg |
| Sell Pack Width | 130 mm |
| Sell Pack Length | 140 mm |
| Sell Pack Height | 50 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.3633 kg |
| Power Dissipation at Rated Current Value | 38 W |
| HS Code | 85351000 |
The Mersen Y300539 is a manufacturer-referenced industrial electrical protection component intended for use with compatible equipment or assemblies. Its exact configuration should be confirmed using current technical documentation.
The product-specific current rating, voltage rating, breaking capacity and operating characteristics should be verified from the original product label or current Mersen technical data before purchase.
Compare the complete Y300539 reference, electrical ratings, dimensions, terminal arrangement and operating characteristics with the original component and equipment parts list.
A substitute should only be used when its electrical performance, operating characteristics, physical dimensions, connections and approvals have been confirmed as equivalent for the application.
Installation should be completed by a suitably qualified electrical professional in accordance with the equipment manufacturer’s instructions and applicable electrical safety requirements.
Accurate manufacturer references and verified technical specifications are essential when selecting electrical protection components for industrial machinery, control panels and power-distribution equipment.
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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...