Description
The Mersen TRM3-1/2 Tri-Onic® Midget Time-Delay Fuse provides reliable supplemental overcurrent protection for small motors, transformers, and high-inrush electronic loads operating up to 250 VAC. Engineered with a 12-second time-delay at 200% rating, this 3.5A midget fuse safely absorbs harmless startup and inrush currents without nuisance tripping.
Built in the compact 1-1/2″ x 13/32″ (10.3 x 38.1 mm) standard midget dimension, the TRM3-1/2 features tin-plated copper ferrule terminals and a durable GMG body. *(Note: Designed for supplemental protection and is not rated for branch circuit protection).*
Key Features
- Time-Delay Performance: Features a 12-second time-delay at 200% rating to accommodate motor starting and transformer inrush currents.
- 250V AC Rating: Optimized for supplemental protection in control circuits, lighting ballasts, and small inductive loads up to 250 VAC.
- Compact Midget Dimensions: Industry-standard 10.3 mm x 38.1 mm (1-1/2″ x 13/32″) footprint fits standard midget fuse holders and blocks.
- Tin-Plated Copper Terminals: High-conductivity ferrule connections ensure secure electrical contact and corrosion resistance.
- Durable GMG Body Construction: Molded from robust glass-melamine (GMG) material for excellent thermal stability and arc quenching.
Specifications
| Technical Specification | Detail |
|---|---|
| Product Model | TRM3-1/2 |
| Brand | Mersen (TriOnic® TRM Series) |
| Product Type | Midget Time-Delay Supplemental Fuse |
| Amperage Rating | 3.5 A (3-1/2 A) |
| Voltage Rating | 250 VAC |
| Fuse Class | Midget |
| Speed / Characteristic | Time-Delay (12 seconds at 200% rating) |
| Interrupting Rating (I.R.) | 10 kA AC Breaking Capacity |
| Terminal Type | Ferrule |
| Terminal Material | Tin-Plated Copper |
| Body / Insulating Material | GMG (Glass Melamine) |
| Mounting Type | Clip-in |
| Frequency | 50/60 Hz |
| Standards & Certifications | UL Listed, CSA Certified, RoHS Compliant |
| Primary Applications | Supplemental protection for small motors, control transformers, solenoids, and high-inrush 250V loads |
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