MIRO Industrial Fuses & Semiconductor Fuse Sourcing
Apexon Supply provides independent B2B sourcing support for MIRO industrial fuses used in circuit protection, power electronics, industrial drives, electrical distribution, control equipment, and maintenance applications. The collection covers multiple MIRO fuse constructions and series, including RGS, RGS4, RGS4A, RGS11 and RS33 high-speed semiconductor fuses, cylindrical fuse links, NH low-voltage fuse links, and related industrial fuse products.
For procurement teams and maintenance engineers, identifying the correct fuse requires more than matching an ampere rating. Part number, rated voltage, utilization category, physical size, terminal or blade configuration, mounting dimensions, breaking capacity, and the protected equipment can all affect suitability. Apexon Supply can assist with part-number verification, datasheet review, replacement sourcing, and difficult-to-find MIRO fuse requirements based on the available technical information.
MIRO Industrial Fuse and Circuit Protection Range
The MIRO products represented in this collection address several different circuit-protection requirements. Some models are intended for fast semiconductor protection in power-electronic equipment, while others use general-purpose, motor-protection, cylindrical, or NH fuse-link constructions. These categories should not be treated as interchangeable simply because two fuses share similar current or voltage ratings.
Apexon Supply is an independent industrial sourcing supplier. We support buyers searching for specific MIRO part numbers, older models, maintenance replacements, and components that may be difficult to obtain through normal procurement channels. Product availability and technical suitability should be confirmed for the individual model before ordering.
MIRO High-Speed Semiconductor Fuses
RGS4 Series
MIRO RGS4 products are represented by high-speed aR semiconductor-protection models intended for power-electronic applications. One verified example is the MIRO RGS4 / 0505 75A high-speed semiconductor fuse. This specific model is rated 75A, 690V AC / 600V DC and uses an aR utilization category. Its product data identifies the RGS Series and order code 0505.
Applications associated with this type of fast fuse include protection of power semiconductor devices in converters, drives, rectifier systems and other power-electronic equipment. When replacing an RGS4 fuse, buyers should confirm the complete part identification together with current, voltage and mounting dimensions rather than selecting only by amperage.
RGS4A Series
The RGS4A range provides another MIRO high-speed semiconductor fuse format. The verified MIRO RGS4A / 660GH 150A fuse is rated 150A at 690V AC and is identified as an aR high-speed, partial-range fuse. The product page specifies order code 660GH together with its mechanical dimensions and mounting-center data.
RGS4A products should be selected against the original equipment requirements because current rating alone does not establish mechanical or electrical interchangeability. Mounting centers, overall length, terminal dimensions and the required protection characteristics should also be checked.
RGS11 Series
MIRO RGS11 models in the reviewed range use a compact bolt-on high-speed semiconductor fuse construction. Verified examples include the RGS11-30A, RGS11-80A, and RGS11-160A. Each of these reviewed models is specified at 250V with an aR high-speed semiconductor-protection classification.
The reviewed RGS11 examples also share a 42 mm fixing center, 56 mm total length, 16.5 mm body diameter and 6.5 x 9 mm mounting-hole specification. These dimensions are confirmed only for the reviewed RGS11-30A, RGS11-80A and RGS11-160A pages and should not be assumed for an unverified RGS11 variant.
RS33 Series
For higher-current examples, the reviewed MIRO RS33 range includes Size 2 square-body semiconductor fuses with knife-blade contacts. The MIRO RS33 250A / NGTC2 and MIRO RS33 315A / NGTC2 are both documented as aR high-speed models with 500V / 690V AC ratings and Size 2 construction.
These RS33 examples illustrate why physical configuration matters during replacement sourcing. A buyer should confirm fuse size, blade arrangement, dimensions, current rating, rated voltage and the original equipment specification before treating another fuse as a possible replacement.
MIRO Cylindrical Fuse Links
The collection also includes cylindrical fuse links for applications that require different utilization categories from semiconductor-protection fuses. For example, the MIRO R015 / RT18-32 0.5A fuse is a 10 x 38 mm cylindrical fuse link rated 500V / 690V AC and classified gG for general-purpose protection. Its individual product specification lists a 100 kA breaking capacity and references IEC 60269 / GB 13539.
By comparison, the MIRO RO15 / RT18-32 5A fuse uses the same 10 x 38 mm cylindrical format but is classified aM for partial-range motor protection. This distinction demonstrates why matching physical fuse size does not by itself confirm equivalent protection behavior.
MIRO NH Low-Voltage Fuse Links
MIRO NH fuse links support low-voltage industrial circuit-protection and maintenance requirements where the original installation uses an NH-format fuse. One verified example is the MIRO NH00C / RT16-00C 160A fuse link. This particular product is rated 160A at 500/660V, carries a gL class reference and is identified as an NH00 / 000 size.
NH replacement selection should include verification of the complete model identification, fuse size, blade dimensions, rated current, rated voltage, utilization category and the requirements of the original fuse base or equipment.
Representative MIRO Models
The following examples are drawn from reviewed Apexon Supply product pages and are not an exhaustive list of the MIRO collection.
| Model | Verified Rating | Category / Construction |
|---|---|---|
| RGS4 / 0505 | 75A, 690V AC / 600V DC | aR high-speed semiconductor fuse |
| RGS4A / 660GH | 150A, 690V AC | aR high-speed semiconductor fuse |
| RGS11-30A | 30A, 250V | aR bolt-on semiconductor fuse |
| RGS11-80A | 80A, 250V | aR bolt-on semiconductor fuse |
| RGS11-160A | 160A, 250V | aR bolt-on semiconductor fuse |
| RS33 250A / NGTC2 | 250A, 500V / 690V AC | aR Size 2 square-body fuse |
| RS33 315A / NGTC2 | 315A, 500V / 690V AC | aR Size 2 square-body fuse |
| R015 / RT18-32 | 0.5A, 500V / 690V AC | gG 10 x 38 mm cylindrical fuse |
| RO15 / RT18-32 | 5A, 500V / 690V AC | aM 10 x 38 mm cylindrical fuse |
| NH00C / RT16-00C | 160A, 500/660V | gL NH00 / 000 fuse link |
How to Select the Correct MIRO Fuse
Industrial fuse replacement should begin with the original part identification and equipment requirements. Similar-looking fuses can have different electrical characteristics, dimensions or intended protection functions.
- Part number and series: Record the complete MIRO model, order code and any secondary identification shown on the existing fuse.
- Rated current: Confirm the required ampere rating from the original component or equipment documentation.
- Rated voltage: Check the complete AC or DC voltage specification rather than assuming a similar physical model has the same voltage capability.
- Utilization category: Determine whether the application requires aR, gG, aM, gL or another specified fuse characteristic.
- Physical format: Verify cylindrical size, bolt-connected terminals, knife contacts, NH size or other construction details.
- Dimensions and mounting: Compare overall size, fixing centers, blade dimensions, mounting-hole dimensions and fuse-holder requirements where applicable.
- Breaking capacity and performance data: Review these values when required by the original design. Do not transfer a breaking-capacity value from one model to another without supporting documentation.
- Standards and equipment requirements: Confirm any required standards, approvals, time-current characteristics and coordination requirements against the original installation or engineering documentation.
If the old fuse label is incomplete, photos of the body, terminals, markings and surrounding fuse holder can help identify the required construction. Equipment model information and an existing datasheet can provide additional confirmation.
Industrial Applications
MIRO products represented in the collection are associated with circuit-protection requirements across industrial electrical and power-electronic equipment. Depending on the specific fuse model, applications can include frequency converters, variable-speed drives, inverters, rectifiers, industrial power converters, UPS equipment, control cabinets, electrical distribution equipment, machinery and maintenance replacement.
High-speed aR products are particularly relevant where semiconductor devices require rapid short-circuit fault interruption. General-purpose and motor-protection cylindrical fuse links serve different protection roles, while NH fuse links can be used in low-voltage distribution and machinery applications. The correct category must always be determined from the equipment and original protection design rather than from the application name alone.
Replacement and Obsolete MIRO Fuse Sourcing
Older industrial equipment often remains operational long after the original spare-parts supply chain has changed. A required MIRO fuse may therefore be identified by an older model number, an order code, a partially readable label, or a specification contained only in the machine documentation. Apexon Supply supports sourcing for standard, older and difficult-to-find industrial fuse requirements and can help organize the technical information needed before procurement.
Where the requested MIRO part can be sourced, Apexon can coordinate procurement based on the confirmed model and quantity. When the exact part is difficult to obtain, the first step is verification rather than assuming that a similarly rated fuse is interchangeable. Rated current and voltage are important, but utilization category, fuse size, mounting geometry, terminal style, breaking capacity and protection characteristics may also determine suitability.
If an alternative or cross-reference needs to be considered, Apexon can review available datasheets, markings and equipment information to identify technically relevant possibilities. Any proposed replacement should be confirmed against the original application requirements before installation. Apexon does not guarantee that another model is electrically or mechanically equivalent solely because it shares a similar rating or appearance.
For obsolete-part inquiries, provide as much information as possible from the existing component. Clear photographs of the label and terminals are especially useful when the exact catalog number is uncertain.
Why Source MIRO Fuses Through Apexon Supply?
Apexon Supply focuses on B2B industrial component sourcing, including difficult-to-find replacement parts and products used in legacy equipment. For MIRO fuse inquiries, support can include:
- Part-number and series identification using available product markings and technical information.
- Review of rated current, voltage, utilization category, dimensions and mounting requirements.
- Datasheet comparison when supporting technical documentation is available.
- Sourcing assistance for standard, older and difficult-to-find MIRO models.
- Review of technically relevant replacement possibilities when the exact requested part cannot be sourced and sufficient information is available.
- Coordination of B2B RFQs, quantities and international sourcing requirements.
Apexon Supply operates as an independent sourcing supplier and does not imply manufacturer authorization or brand affiliation. The objective is to help industrial buyers identify the requested component accurately and coordinate sourcing based on the available technical and commercial information.
MIRO Fuse FAQ
What MIRO fuse series can Apexon Supply help source?
The current collection includes MIRO products from RGS-related families such as RGS4, RGS4A and RGS11, RS33 semiconductor fuses, cylindrical fuse links and NH low-voltage fuse links. Additional models should be checked by exact part number because the available product range can change.
What is the difference between aR, gG and aM MIRO fuses?
They identify different protection characteristics. Reviewed MIRO RGS and RS33 examples use the aR category for high-speed semiconductor protection. The reviewed R015 example uses gG for general-purpose protection, while the reviewed RO15 example uses aM for partial-range motor protection. These categories should not be substituted for one another without engineering confirmation.
Can two MIRO fuses with the same current rating be interchangeable?
Not necessarily. Rated voltage, utilization category, physical dimensions, mounting arrangement, fuse size, breaking capacity and time-current behavior may differ. Confirm the original part number and full technical requirements before replacement.
Can Apexon help identify a MIRO fuse if the part number is unclear?
Yes. Send clear photos of the fuse label, body and terminals together with any readable model numbers, electrical ratings, equipment information and datasheets. These details can be reviewed to narrow down the required model.
Can Apexon source obsolete or difficult-to-find MIRO fuse models?
Apexon provides sourcing support for older and difficult-to-find industrial components. Availability is not guaranteed, but the requested MIRO model can be reviewed using its part number and technical information before sourcing options are evaluated.
Can Apexon recommend a replacement when the original MIRO fuse is unavailable?
Apexon can review technically relevant replacement or cross-reference possibilities when adequate specifications are available. Any alternative must be checked for electrical, mechanical and application suitability; equivalent performance should not be assumed without confirmation.
Are all MIRO fuses shown on this page continuously in stock?
No. Availability can vary by model, quantity and sourcing conditions. Confirm the exact part number and required quantity for the current sourcing status rather than assuming that every product in the collection is immediately available.
What information should I send for a MIRO fuse RFQ?
Provide the complete MIRO part number or series, required quantity, rated current and voltage if known, photographs of the existing fuse or nameplate, any available datasheet or equipment information, and the destination country. For replacement inquiries, include dimensions and mounting details when available.
Request a MIRO Fuse Quote
Send Apexon Supply the MIRO part number, required quantity, photos or nameplate information, available datasheet, equipment details and destination country. For an obsolete or uncertain model, include all visible markings and dimensions. Our team can use that information to review the requested part, confirm available technical data and coordinate B2B sourcing options.
Explore MIRO industrial fuses, semiconductor fuses, and available models in our MIRO product collection.