Midget Open Style (303 Series)
The Midget Open Style (303 Series) is part of the Mersen (formerly Ferraz Shawmut) fuse holders & blocks line, distributed by Gross Automation.

Ferraz Shawmut Midget Fuse Blocks accommodate all 30 ampere 1-1/2” x 13/32” midget fuses. A choice of box, screw, or pressure-plate connectors fit a wide range of stranded or solid copper wire. Insulators are glass-filled polycarbonate (GFPC) with verified dielectric strength in excess of 2500V. Fuse blocks feature a unique adder block which can be snapped onto 1-, 2- or 3-pole blocks to form multi-pole segmented blocks of as many poles as desired. All fuse clips are made of high conductivity tin-plated copper alloy.
Specifications
| Specification | Value |
|---|---|
| Ratings | AC: 600VAC - 30A; All fuse blocks meet the requirements of UL Std. 512; Midget Block - UL Recognized Component Guide IZLT2, File E52283; Midget Block - CSA Certified Class 6225, File 32169; RoHS Compliant |
Ratings
- AC: 600VAC - 30A
- All fuse blocks meet the requirements of UL Std. 512
- Midget Block - UL Recognized Component Guide IZLT2, File E52283
- Midget Block - CSA Certified Class 6225, File 32169
- RoHS Compliant
Catalog Numbers
600 Volt, 30A Midget Fuse Blocks
| Connector Type | Wire Range | Poles | Catalog Number (Midget) |
|---|---|---|---|
| Screw w/double quick connects at both ends | Cu #10-14 | Adder | 30310+ |
| Screw w/double quick connects at both ends | Cu #10-14 | 1 | 30311+ |
| Screw w/double quick connects at both ends | Cu #10-14 | 2 | 30312+ |
| Screw w/double quick connects at both ends | Cu #10-14 | 3 | 30313+ |
| Screw w/double quick connects at both ends | Cu #10-14 | 4 | 30314+ |
| Pressure plate (sems) w/double quick connects at both ends | Cu #10-14 | Adder | 30320+ |
| Pressure plate (sems) w/double quick connects at both ends | Cu #10-14 | 1 | 30321+ |
| Pressure plate (sems) w/double quick connects at both ends | Cu #10-14 | 2 | 30322+ |
| Pressure plate (sems) w/double quick connects at both ends | Cu #10-14 | 3 | 30323+ |
| Pressure plate (sems) w/double quick connects at both ends | Cu #10-14 | 4 | 30324+ |
| Copper box | Cu #6-14 | Adder | 30350+ |
| Copper box | Cu #6-14 | 1 | 30351+ |
| Copper box | Cu #6-14 | 2 | 30352+ |
| Copper box | Cu #6-14 | 3 | 30353+ |
| Copper box | Cu #6-14 | 4 | 30354+ |
Accessories
| Catalog Number | Description |
|---|---|
| U09301+ | End barrier, to convert Midget or Class CC adder pole to single pole |