The EL304A Signal Trim Junction Box is designed for dependable load cell signal trimming in rugged weighing environments. Supporting two or four single load cells, the EL304A features individual cell signal disconnect switches that simplify diagnostics and maintenance.
Housed in a NEMA Type 4X-rated FRP enclosure, the junction box protects sensitive electronics against moisture, dust, and washdown environments. Designed for corner and section trimming, it’s ideal for livestock, tank, and vessel weighing systems where accuracy and durability are essential.
Supports 2 or 4 Load Cells
Compatible with even-numbered load cell configurations only.
Signal Disconnect Switches
Easily isolate and troubleshoot individual load cell signals.
Individual and Section Trimming
Fine-tune corner errors or adjust full sections with precision.
Expansion Ready
Equipped with an expansion port for system growth or connectivity.
NEMA Type 4X Enclosure
Fiberglass-reinforced polyester housing ensures 40 psi washdown protection.
Livestock and animal weighing systems
Tank and hopper scales
Vessel and industrial batching systems
| Parameter | Details |
|---|---|
| Cable Fittings | Four nylon (0.079–0.236 in) & two nylon (0.236–0.354 in) strain reliefs |
| Material/Rating | NEMA Type 4X, Fiberglass Reinforced Polyester (FRP), 40 psi washdown |
| Terminal Connectors | 5.0 mm miniature screw terminals, max wire size #14 AWG |
| Trimming Capabilities | Individual load cell and section signal trim |
| Potentiometers | 100,000 ohm, 25-turn cermet |
| Expansion Port | Yes |
| Warranty | One-year limited |
| Model | Complete J-Box Replacement | Replacement Board Only | Replacement Cord Grips | Replacement Pressure & Condensation Vent | Desiccant Packs |
|---|---|---|---|---|---|
| JB4SS | 88956 | 88958 | 58983=PG7, 59001=PG11 | 88733 PreVent™ breather (vent), 88734 (vent nut) | 92240 |
| JB4ES | 91779 | 89446 | 58983=PG7, 59001=PG11 | 88733 PreVent™ breather (vent), 88734 (vent nut) | 92240 |
| JB4SP / JB4SPT | 91780 / 92762 | 88958 / 89894 | 58983=PG7, 59001=PG11 | 88733 PreVent™ breather (vent), 88734 (vent nut) | 16039 |
| JB4EP / JB4EPT | 91781 / 92763 | 89446 / 89894 | 58983=PG7, 59001=PG11 | 88733 PreVent™ breather (vent), 88734 (vent nut) | 16039 |
| EL204 | 73428 | 88958 | N/A | N/A | N/A |
| JB8SP | 91782, 173807 - FM Approved | 89889, 172415 - FM Approved | 15655 (cord grip), 15656 (nut)=3/8" NPT, 15628 (cord grip), 15630 (nut)=1/2" SPT | 88733 PreVent™ breather (vent), 88734 (vent nut) | 16039 |
| JB8SPT | 91783 | 89889 (load cell), 89894 (transient protection) | 15655 (cord grip), 15656 (nut)=3/8" NPT, 15628 (cord grip), 15630 (nut)=1/2" SPT | 88733 PreVent™ breather (vent), 88734 (vent nut) | 16039 |
| EL304A | 21169 | 21301 | N/A | N/A | N/A |
| JB1010 | 36231 | 36351 | N/A | N/A | N/A |
| JB1010ST | 68813 | 68811 | N/A | N/A | N/A |
| EL210 | 91781, JB4EP* | 92472 | 58983=PG7, 59001=PG11 | N/A | N/A |
| EL211A | 91780, JB4SP* | 92473 (no section trim) | 58983=PG7, 59001=PG11 | N/A | N/A |
| EL604-AL | 88956, JB4SS* | 88958 | 58983=PG7, 59001=PG11 | N/A | N/A |
| EL604STA | 88956, JB4SS* | 88958 | 58983=PG7, 59001=PG11 | N/A | N/A |
| EL604ETA | 91779, JB4ES* | 89446 | 58983=PG7, 59001=PG11 | N/A | N/A |
| EL504 | 21165 | 21296 | N/A | N/A | N/A |
| JB808S | 91782, JB8SP* | 92471 | 15655 (cord grip), 15656 (nut)=3/8" NPT, 15628 (cord grip), 15630 (nut)=1/2" SPT | N/A | N/A |
| JB818ST | 91783, JB8SPT* | 77445, 89889, 89894 | 15655 (cord grip), 15656 (nut)=3/8" NPT, 15628 (cord grip), 15630 (nut)=1/2" SPT | N/A | N/A |
Free Shipping: Available across 48 continental USA. Extra charges may apply for residential, farm, or rural areas.
Express Shipping: Overnight and faster shipping options available at additional costs. Quotes obtainable via email.
Delivery Time: Typically 5 to 7 business days, varying by location and external conditions.
Tracking Information: Provided via email upon shipment. Accessible through account login. Additional information available upon request.
Return Policy: 15-day return period for unused, original condition products. A 25% restocking fee applies. Buyer covers original and return shipping costs.
Customer Support: Contact at (844)-735-5386 or info@selletonscales.com for queries or concerns about shipping.
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