Specifications
| Brand | MIRO (Miro Electric / Zhejiang Mingrong) |
| Models | RX1 / RX2 (dimensionally and functionally identical) |
| Function | Spring-pin mechanical striker + integrated auxiliary microswitch signals fuse operation |
| Mounting | Alongside fuse link, under end-cap screws (DIN 43653-style), adjustable base |
| Standards | DIN 43653 mounting interface |
| Output Use | PLC input, alarm annunciator, shunt trip or interlock circuit |
| Product Type | Fuse striker alarm indicator for NH-type (knife-blade contact) fuse links |
| Rated Voltage | AC 50 Hz, 1000 V insulation voltage |
| Auxiliary Contacts | 1 NO + 1 NC microswitch (dry contact) |
| Typical Applications | Drives, rectifier stacks, UPS, soft starters, converter panels, MCCs, distribution boards |
| Compatible Fuse Sizes | NH000 through NH4 (all NH knife-blade contact fuse sizes) |
Compatible With
Description
Sourced and supplied by Al Imran Enterprises, Lahore, Pakistan. The MIRO RX1/RX2 is a fuse striker alarm indicator rated for AC 50 Hz service up to 1000 V insulation voltage. It is NOT a fuse link -- it is the mechanical striker/monitoring accessory that mounts on NH-type (knife-blade contact) fuse links from sizes NH000 through NH4 and converts the fuse operation into an electrical alarm signal. When a fast-acting semiconductor fuse or general-purpose NH fuse operates, nothing may look different from outside the enclosure. The RX1/RX2 sits alongside the fuse link and clamps under the link's end-cap screws (DIN 43653-style fixing). The moment the fuse element melts, the unit's spring-loaded pin fires and trips an integrated auxiliary microswitch -- typically 1 NO + 1 NC dry contact -- that your PLC, annunciation relay or trip circuit sees instantly. The adjustable base accommodates minor dimensional variation between NH fuse families. Typical duties include AC side monitoring of variable frequency drives, DC drives, rectifier stacks, UPS systems and soft starters running at 690 V class and above, where fast fuse-blow detection protects downstream silicon and cuts fault-finding from hours to minutes. Also suitable for general NH fuse alarm and interlock circuits in switchboards, MCCs and distribution panels. We hold these strikers in physical stock together with the NH semiconductor fuse links they pair with, including Protistor and SITOR-class links from Mersen, Siemens and Eaton. Wiring takes minutes: the microswitch terminals land on standard screw connections and the dry contact drops straight into any 24 V PLC input or relay coil. Tell us the fuse family you are protecting and we will confirm mounting fitment and supply the matched pair. Contact us for pricing, lead times, and technical compatibility checks.
RX1/RX2-1000V — Frequently Asked Questions
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