Advance Tabco
Advance Tabco FC-1-1818-X Wall Mounted Sink 18 in x 18 in, 304
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$790.99
0.00939909BTC
In stock
Tjernlund Products, Inc.
Tjernlund Products, Inc. 950-1030 Proving Switch fan accessory
Proving switch designed for Tjernlund HSJ models and compatible with Grainger item 4KA72
- weight0.5
- typeClosed Base
- materialHAWA
- Proving switch verifies airflow for HSJ models
- Compatible with Grainger item 4KA72 for direct replacement
- Designed specifically for Tjernlund brand equipment
- Closed-base construction with HAWA material
- Lightweight at .5 for easy installation
Proving Switch for HSJ Models
The Tjernlund 950-1030 Proving Switch is an accessory designed for integration with specific ventilation equipment. It is intended for installers and facility managers who require a safety interlock for compatible fan systems. This component verifies operational status before allowing connected equipment to run. It serves a precise role in air-handling installations that demand proof of airflow.
Compatibility Limited to Listed Models
Practical use is restricted to the Grainger item 4KA72 and the manufacturer model HSJ as stated in the specifications. The switch fits Tjernlund-branded units matching those references only. Installers must confirm the exact model number before purchase because no cross-reference or broader compatibility is documented. Using this switch with unlisted hardware will not provide the intended safety function.
Closed-Base Construction with HAWA Material
The unit weighs .5 units and features a closed-base design built from HAWA material. This construction protects internal contacts from dust and debris common in ventilation pathways. The enclosed housing supports reliable switching action day to day without exposure to moving air streams. Mounting provisions align with the specified HSJ series for a direct fit.
Highlights
- Proving switch verifies airflow for HSJ models
- Compatible with Grainger item 4KA72 for direct replacement
- Designed specifically for Tjernlund brand equipment
- Closed-base construction with HAWA material
- Lightweight at .5 for easy installation
Specifications
| Brand | TJERNLUND |
|---|---|
| weight | 0.5 |
| type | Closed Base |
| material | HAWA |
Questions about this item
Which proving switch model fits the HSJ fan accessory?
The 950-1030 proving switch is specified for use with the HSJ model number.
What does the .5 weight figure mean for installation?
At .5 the switch is lightweight and adds minimal load to the mounting surface.
How does the closed base type affect the connection?
The closed base design encloses the switch mechanism, protecting internal contacts from dust and debris.
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