High-speed Protistor® fuse delivering rapid circuit protection for sensitive power electronic equipment up to 690VAC IEC and 700VAC UL, 250A rating, with striker indication and slotted blade terminals.
£122.10
The Mersen T300029 is a manufacturer-specific industrial electrical protection component intended for use in compatible machinery, control panels, power distribution systems and automation equipment. Its dedicated Mersen reference helps engineers, maintenance teams and purchasing professionals identify the required component for replacement, repair and equipment-support applications.
Mersen supplies specialist electrical protection products for industrial power systems, machinery and electrical installations. When correctly selected, these components help isolate abnormal electrical conditions and reduce the risk of damage to conductors, control devices and connected equipment.
Detailed technical specifications for the T300029 reference could not be reliably verified from publicly available product information. Its current rating, voltage rating, protection class, breaking capacity, terminal configuration and physical dimensions should therefore be confirmed from the product markings, original equipment documentation or official Mersen technical data before ordering or installation.
Industrial electrical protection components help disconnect or isolate circuits when abnormal electrical conditions occur. Correctly specified protection can limit thermal and mechanical damage to cables, control devices, power components and connected machinery.
The Mersen T300029 should not be selected by physical appearance alone. Before installation, verify the complete manufacturer reference and all applicable electrical, mechanical and operating specifications against the original component, approved bill of materials or equipment manufacturer documentation.
| Item number | T300029 |
|---|---|
| Catalogue No | A070UD31KI250 |
| Description | Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 250A With Striker Slotted Blades short |
| EAN/UPC Code | 3605340322538 |
| Rated voltage AC UL | 700 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 250 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 31 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 28000 A²s |
| Melting I2t | 4700 A²s |
| 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 | Slotted Blades |
| Product Width | 51 mm |
| Product Length | 129 mm |
| Product Height | 56.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.203 kg |
| Sell Pack Width | 157 mm |
| Sell Pack Length | 166 mm |
| Sell Pack Height | 62 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.401 kg |
| Power Dissipation at Rated Current Value | 52 W |
| HS Code | 85361090 |
| Country of Manufacture | France |
The Mersen T300029 is an industrial electrical protection component intended for use in compatible machinery, control, automation or power distribution equipment.
Yes. T300029 is the Mersen product reference and should be matched exactly against the original component or approved equipment documentation.
Check the markings on the original component, the equipment manual or official Mersen documentation to confirm its current rating, voltage rating, protection class and breaking capacity.
A replacement should not be selected by appearance alone. Its electrical ratings, operating characteristics, dimensions and terminal arrangement must all be compatible with the original installation.
The component should be selected and installed by suitably qualified electrical personnel in accordance with applicable regulations and the equipment manufacturer’s instructions.
Mersen electrical protection products are used by machine builders, panel manufacturers, electrical engineers and maintenance professionals across demanding industrial applications worldwide.
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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...