

Rugged Junction Box for Precise Load Cell Trimming
The JB8SP TuffSeal® is built to handle tough environments where multiple load cells need to be trimmed and protected. Designed for truck, livestock, and railroad scales, this rugged NEMA Type 4X junction box offers exceptional protection with its polycarbonate enclosure, PreVent™ breather vent, and conformal coated circuit board.
Supporting two to eight load cells (even numbers only), the JB8SP makes setup easy with pluggable connectors and precise individual cell and section trimming. Its expansion port adds versatility for future system growth, and the removable connectors simplify service and replacements.
Key Features
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Durable Polycarbonate Enclosure
Seals out dust, moisture, and debris for reliable outdoor operation. -
PreVent™ Breather Vent
Reduces internal condensation by equalizing pressure during temperature changes. -
Signal Trimming Options
Offers both individual cell and range (section) trim capability. -
Tool-Free Maintenance
Easily service load cells using removable screw-type connectors. -
Conformal Coated Circuit Board
Adds an extra layer of protection to sensitive electronics in harsh conditions.
Applications
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Truck Scales
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Livestock Weighing Systems
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Railroad Track Scales
JB8SP Specifications
Feature | Details |
---|---|
Cable Fittings | (9) 3/8 in NPT (0.157–0.314 in), (2) 1/2 in NPT (0.272–0.472 in) |
Material/Rating | NEMA Type 4X polycarbonate enclosure with SS screws and solid overlapping lid |
Connectors | Pluggable screw type, 12–28 AWG |
Trimming | Individual cell and range/section trim |
Potentiometers | 100,000 ohm, 25-turn cermet |
Circuit Board Size | 5.7 × 7.2 in, with conformal coating |
Operating Temperature | 0 °F to 122 °F (–18 °C to 50 °C) |
Expansion Port | Yes |
Approvals | cFMus |
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.