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MERSEN FUSE DII-SI.EINSATZ 25A 500V GR DIIGR50V25
Mersen B216109 DIIGR50V25 RECTICUR DII high-speed gR semiconductor fuse link rated at 25 A, 500 V AC and 440 V DC with a 100 kA AC breaking capacity.
Why Choose the Mersen B216109 RECTICUR DII Fuse Link?
The Mersen B216109, also identified by catalogue number DIIGR50V25, is a high-speed 25 A gR semiconductor protection fuse link designed to protect sensitive power electronic components against damaging overcurrents and short circuits. Part of the Mersen RECTICUR D range, it combines rapid fault interruption with the familiar screw-in DII fuse format.
This fuse link is rated for operation at up to 500 V AC and 440 V DC. Its gR full-range characteristic provides high-speed protection for semiconductor devices such as diodes, thyristors, rectifiers and the power components used within AC and DC motor drives.
The B216109 features a robust insulated body suitable for significant mechanical and thermal stresses. Nickel-plated or silver-plated copper alloy contacts, low power dissipation and a visible operating indicator help provide dependable performance and straightforward maintenance in industrial power conversion and automation equipment.
Key Advantages
- High-speed gR full-range semiconductor protection.
- 25 A rated current for power electronic circuits.
- Suitable for systems operating at up to 500 V AC or 440 V DC.
- 100 kA AC breaking capacity for high prospective fault currents.
- Compact DII screw-in format for compatible Diazed fuse systems.
- Low power dissipation supports efficient and reliable operation.
Key Features
- Mersen RECTICUR D gR series.
- DIIGR50V25 catalogue designation.
- 25 A rated current.
- 500 V AC and 440 V DC rated voltage.
- gR speed and utilisation characteristic.
- 100 kA rated AC breaking capacity.
- Special fuse-element design for rapid interruption of fault currents.
- Coloured top-contact indicator for operating-condition identification.
- Ageing-resistant insulated body.
High-Speed Protection for Power Electronics
Semiconductor devices can be damaged by overcurrents that occur too quickly for conventional circuit-protection devices to interrupt effectively. The Mersen B216109 uses a specially designed fuse element to restrict damaging let-through energy and rapidly disconnect the circuit when a serious fault occurs.
Its gR characteristic provides full-range semiconductor protection, covering both overload and short-circuit conditions. This makes the fuse suitable for protecting rectifiers, drive power stages and other sensitive electronic switching components in industrial electrical equipment.
Typical Applications
- AC and DC variable speed drives.
- Industrial rectifiers and power converters.
- Diode and thyristor protection.
- Semiconductor switching circuits.
- Industrial automation equipment.
- Power electronic control panels.
Technical Specifications
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| Current | 25 A | |
|---|---|---|
| Voltage | 500 V | |
| Device Type | Fuse link | |
| Fuse Type | D / D0 (Neozed/Diazed), Semiconductor | |
| Fuse Size | DII | |
| Fuse Class | gR | |
| Manufacturer | Mersen | |
| Series | RECTICUR D gR | |
| Model / item number | B216109 | |
| Catalogue number | DIIGR50V25 | |
| Product type | High-speed semiconductor fuse link | |
| Fuse system | Diazed D fuse system | |
| Fuse size | DII | |
| Thread size | E27 | |
| Operating characteristic | gR | |
| Rated current | 25 A | |
| Rated voltage AC | 500 V AC | |
| Rated voltage DC | 440 V DC | |
| Rated breaking capacity AC | 100 kA | |
| Pre-arcing I²t | 95 A²s | |
| Operating I²t at rated voltage | 200 A²s | |
| Power dissipation at rated current | 8.2 W | |
| Body type | Insulated ceramic fuse body | |
| Contact material | Nickel-plated / silver-plated copper alloy | |
| Weight | Approx. 30 g | |
| Package quantity | 5 | |
| Applicable standards | IEC 60269-4, DIN EN 60269-4 and DIN VDE 0636-3 | |
| EAN / UPC | 4086500004225 |
Frequently Asked Questions
What is the Mersen B216109 used for?
The Mersen B216109 is used to protect sensitive semiconductor components, including diodes, thyristors, rectifiers and motor-drive power electronics, against overloads and short circuits.
What is the current rating of the B216109 fuse?
The B216109 has a rated current of 25 A.
What voltage is the Mersen B216109 rated for?
This fuse link is rated for operation at up to 500 V AC and 440 V DC.
What does the gR characteristic mean?
The gR characteristic identifies a full-range, high-speed fuse designed specifically to protect semiconductor devices against both overload and short-circuit currents.
What fuse holder is compatible with the B216109?
The B216109 is a DII Diazed fuse link with an E27 thread and should be installed in a suitably rated compatible DII fuse base or holder.
Trusted Semiconductor Protection from Mersen
Mersen RECTICUR fuse links are used by panel builders, automation engineers and equipment manufacturers to provide dependable high-speed protection for power electronic components and industrial drive systems.
