Key Features
Stainless steel NEMA Type 4X enclosure for harsh environments
Supports two, three, or four single load cells
PreVent™ breather vent prevents moisture intrusion
Jumpers for enabling/disabling load cells
Individual cell signal trimming
Expansion port to connect additional junction boxes
Spring clamp screwless connectors (12 to 28 AWG)
Conformal coated circuit board for corrosion protection
Wide temperature operating range: 0 °F to 122 °F
Approved by cFMus
One-year limited warranty
The Rice Lake JB4SS TuffSeal® Signal Trim Junction Box is a rugged and reliable solution for summing two to four single load cell outputs. Designed for demanding industrial applications, it features a stainless steel NEMA Type 4X-rated enclosure that resists corrosion and ensures dependable operation in washdown and outdoor environments.
With individual signal trimming and expansion capabilities, the JB4SS is well-suited for applications like floor, tank, and hopper scales, where multiple load cells are integrated. The internal PreVent™ breather vent helps protect the internal electronics by preventing condensation, enhancing longevity and accuracy.
JB4SS TuffSeal® Signal Trim Junction Box Specifications | Material | Stainless Steel |
| Enclosure Rating | NEMA Type 4X |
| Load Cell Capacity | Two, Three, or Four Single Load Cells |
| Cable Fittings (P/N 88956) | (4) PG7: 0.118 – 0.255 in, (2) PG11: 0.197 – 0.394 in |
| Cable Fittings (P/N 107700) | (4) PG9: 0.138 – 0.315 in, (2) PG11: 0.197 – 0.394 in |
| Connectors | Spring Clamp, Screwless (12 to 28 AWG) |
| Trimming Type | Signal Trim (Individual Cell) |
| Potentiometers | 100,000 ohm, 25-turn cermet |
| Circuit Board Size | 3.8 × 2.3 in with conformal coating |
| Temperature Range | 0 °F to 122 °F (-18 °C to 50 °C) |
| Warranty | One-Year Limited |
| Approvals | cFMus |
Replacement Parts Table | 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 |
Why Choose the JB4SS TuffSeal®?
Whether you're upgrading your existing system or building a new weighing platform, the JB4SS delivers precision, expandability, and reliability in every environment. Its rugged build and modular design ensure seamless integration into your industrial weighing setup.
Order the JB4SS TuffSeal® Signal Trim Junction Box today from SellEton Scales — your authorized Rice Lake dealer — and experience the power of durable, accurate connectivity.
