Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE US 271 I PLAGE TYPE B US27IRING
The UltraSafe™ Fuse Holder for 27×60 mm UL fuses supports up to 800VAC or 800VDC with a visual indicator for blown fuse detection and IP20 finger-safe design.
£88.05
Why Choose the Mersen B223515 US27IRING UltraSafe™ Fuse Holder?
The Mersen B223515, catalogue number US27IRING, is a single-pole UltraSafe™ modular fuse holder designed for cylindrical 27 × 60 mm fuse links. Rated for operation at up to 800 V AC and 800 V DC, it provides a robust and finger-safe solution for industrial power distribution, semiconductor protection and power-conversion installations.
Part of the Mersen Modulostar® CMS27 and UltraSafe™ US27 range, the B223515 features an integrated visual fuse-operation indicator, allowing maintenance personnel to identify an operated fuse quickly. Its ring-lug terminal arrangement supports secure cable termination, while the IP20 construction helps protect operators against accidental contact with live parts, including during fuse replacement.
The US27IRING has a conventional free-air thermal current rating of 140 A and accommodates fuse links with a maximum power dissipation of 11 W. DIN rail mounting in accordance with EN 60715 makes it suitable for installation in industrial control panels, drives, converters, UPS systems and renewable-energy equipment.
Key Advantages
- Suitable for 27 × 60 mm cylindrical fuse links.
- 800 V AC and 800 V DC IEC and UL voltage ratings.
- 140 A thermal current rating.
- Integrated visual blown-fuse indicator.
- IP20 finger-safe construction, including during fuse replacement.
- Secure ring-lug terminal connections.
- DIN rail mounting for efficient panel installation.
- Modular single-pole design suitable for field-assembled systems.
Key Features
- Mersen Modulostar® UltraSafe™ fuse holder.
- Item number: B223515.
- Catalogue number: US27IRING.
- Single-pole configuration.
- Compatible with 27 × 60 mm ferrule fuse links.
- 800 V AC/DC rated voltage.
- Visual fuse-operation indication.
- Ring-lug terminal connection.
- 8 kV rated impulse withstand voltage.
- Durable thermoplastic or thermoset construction.
- RoHS-compliant design.
Finger-Safe Industrial Fuse Installation
The Mersen B223515 is designed to provide IP20 finger-safe protection during normal operation and fuse replacement. Its enclosed modular construction helps reduce the risk of accidental contact with energised components, improving safety for operators and maintenance personnel working within industrial electrical panels.
The fuse holder can be mounted directly onto a standard DIN rail and incorporated into modular protection assemblies. Its durable housing is engineered to withstand demanding industrial environments while providing dependable retention and electrical contact for compatible 27 × 60 mm fuse links.
Integrated Visual Fuse Indicator
The US27IRING incorporates a visual indication system that identifies when a compatible fuse has operated. This allows maintenance personnel to locate a faulted circuit quickly without testing every fuse individually, helping to reduce diagnostic time and equipment downtime.
The visual indicator is particularly useful in control panels and power-conversion systems containing multiple protected circuits. Compatible microswitch accessories may also be used within the wider UltraSafe™ range where remote electrical indication is required.
Typical Applications
- Industrial control panels.
- Variable-frequency drives.
- Power converters and rectifiers.
- UPS and backup-power systems.
- Renewable-energy inverters.
- Semiconductor protection circuits.
- Motor-control centres.
- Industrial power-distribution systems.
- Equipment operating at up to 800 V AC or DC.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Visual indicator | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole | |
| Fuse Size | 27x60 mm | |
| Voltage | 800 V | |
| Item number | B223515 | |
| Catalogue No | US27IRING | |
| Description | Fuse Holder UltraSafe™ 800VAC 800VDC UL Fuse size 27x60 1-pole Visual Indicator Ring lug IP20 | |
| EAN/UPC Code | 3605340261851 | |
| Rated voltage AC UL | 800 V | |
| Rated voltage DC UL | 800 V | |
| Rated voltage AC IEC | 800 V | |
| Rated voltage DC IEC | 800 V | |
| Ampere Rating | 140 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC/DC | |
| Fuse Size | 27x60 | |
| Design Details | single pole | |
| Indication System | Yes | |
| Indication System Type | Visual Indicator | |
| Number of Poles | 1-pole | |
| Torque Rating | 3.5 Nm | |
| Rated Impulse Withstand Voltage | 8 kV | |
| Rated Insulation Voltage | 800 V | |
| Max Power dissipation of Fuse Links Pn | 11 W | |
| Installation Mounting | DIN rail acc. EN 60715 | |
| Product Width | 39.9 mm | |
| Product Length | 93.5 mm | |
| Product Height | 302 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 0.909 kg | |
| Sell Pack Width | 169.9 mm | |
| Sell Pack Length | 220 mm | |
| Sell Pack Height | 110 mm | |
| Product group | Fuse Holders | |
| Conventional Free Air thermal Current With Fuse-Links Ith | 140 A | |
| Product Weight | 0.303 kg |
Frequently Asked Questions
What is the Mersen B223515?
The B223515 is a single-pole Mersen UltraSafe™ modular fuse holder. Its catalogue number is US27IRING, and it is designed for 27 × 60 mm cylindrical fuse links.
What voltage is the US27IRING rated for?
The Mersen US27IRING is rated for operation at up to 800 V AC and 800 V DC under both IEC and UL ratings.
Does the B223515 include a blown-fuse indicator?
Yes. The fuse holder includes an integrated visual indicator that helps identify when a compatible fuse link has operated.
What type of terminal connection does the B223515 use?
The B223515 uses ring-lug terminal connections, providing a secure cable termination suitable for demanding industrial installations.
Can the Mersen B223515 be mounted on a DIN rail?
Yes. The US27IRING is designed for DIN rail mounting in accordance with EN 60715.
What is the current rating of the B223515?
The fuse holder has a conventional free-air thermal current rating of 140 A when used with suitable fuse links.
Is the US27IRING finger-safe?
Yes. The fuse holder provides IP20 finger-safe protection, including during the fuse-changing process when installed and used correctly.
Trusted for Industrial Fuse Protection
Mersen Modulostar® and UltraSafe™ fuse holders are specified by panel builders, OEMs and industrial engineers for safe, compact and dependable cylindrical fuse installations.
