sales@foscoconnect.com
(510) 319-9878
Silicon Valley, CA, USA
841B Test Jack Isolator Paddle
The 841B Test Jack Isolator Paddle is designed for the temporary separation of series current-jack poles on test switches used in metering and protective-relay circuits. Constructed from durable molded polycarbonate and acetal resin, this paddle features a low coefficient of friction for smooth and reliable insertion.
It is specifically engineered for use with standard series test jacks, including ABB/Westinghouse, GE FT, Superior, Meter Devices, and States. The high-visibility bright orange finish ensures the isolator is easily identified during testing, reducing the risk of accidental retention. A built-in 5 mm (0.197 in) hole at the end allows for convenient attachment to a key chain, cord, or lanyard.
Key Features
- Compatible with ABB/Westinghouse, GE FT, Superior, Meter Devices, and States series test jacks
- Molded polycarbonate and tough acetal resin construction for high durability
- Low coefficient of friction for easy insertion and extraction
- High-visibility bright orange color for safe identification
- Integrated 5 mm (0.197 in) lanyard hole
Technical Specifications
| Total Length | 89 mm (3.5 in) |
|---|---|
| Insertion Length | 40 mm (1.6 in) |
| Width | 13.5 mm (0.5 in) |
| Blade Thickness | 1.6 mm (0.06 in) |
| Handle / Guide Thickness | 4 mm (0.16 in) |
| Material | Molded polycarbonate and acetal resin |
| Color | Orange |
Important: Always remove all isolator paddles and restore switches to their normal operating state once testing is complete.

