Compare Differences Between UM-240 And JL-240XA
يقدم
Choosing between two NEMA 7-pin receptacles that look “almost the same” on paper can be frustrating. UM-240 and JL-240XA share many core specs, yet they target slightly different projects, budgets, and compliance levels.
In this article, we’ll walk through the comparison. You’ll see where the numbers are identical, where the details quietly change your risk profile, and how to match each product to the right lighting control strategy in real street-lighting projects.
What Problem Are Engineers Trying To Solve With UM-240 And JL-240XA?
When you design or retrofit LED street luminaires, your real problem isn’t “which socket number do I pick?” It’s:
- How do I give every luminaire a reliable interface for a photocell street lightcontroller or wireless node?
- How do I keep installation simple, but leave space for future smart-city upgrades?
UM-240 and JL-240XA are both NEMA 7-pin photocontrol receptacle designs. They provide the mechanical and electrical interface between the luminaire and an ANSI C136.41-compliant controller node (for example, a خلية ضوئية من الغسق إلى الفجر or wireless CMS node).
In other words, they are the “plug socket” on top of the fixture. Once the socket is in place, you can add or swap controllers without rewiring the whole light. That’s why choosing the right مقبس NEMA is so important: if the interface is robust, your future lighting control roadmap becomes much easier.
For context, Long-Join’s NEMA 7-pin receptacle family is widely used in LED road lighting, tunnels, and area lighting where standardized control is required.
How Do The Core Technical Specifications Of UM-240 And JL-240XA Compare?
Looking at the datasheets, you might feel both models are “the same” — same voltage, same current, similar temperature range. That is mostly true at a basic electrical level, and it explains why many engineers consider them interchangeable in early design.
The table below summarizes the key parameters and what they mean in real projects, based on your outline and Long-Join’s public product family.
Summary Table: UM-240 vs JL-240XA
المعلمة | يو إم-240 | JL-240XA | What It Means In Practice |
Rated Voltage / Power Range | 0–480 V | 0–480 V | Both work across global mains ranges and multi-voltage grids. |
تصنيف الحمل | 15 أ | 15 أ | Either can support typical LED driver currents in road luminaires. |
Control Signal Range | 0–30 VDC, max 250 mA | 0–30 VDC, max 250 mA | Both can carry dimming/communication signals for smart controllers. |
Wire Gauges | Mix of 18 AWG + 14 AWG, ~8″ leads | 18 AWG / 14 AWG, ~6″ minimum leads | UM-240 gives slightly longer leads; JL-240XA follows standard lengths. |
درجة حرارة التشغيل | –40 °C to +70 °C | –40 °C to +70 °C | Both are suitable for harsh outdoor climates. |
Outdoor Wiring | مدعوم | مدعوم | Designed for typical street/area luminaire environments. |
Contact Gold Plating | ~0.5 μm (low-voltage pads) | ~0.7 μm (low-voltage pads) | JL-240XA offers thicker plating for better long-term contact stability. |
مواد الإسكان | PBT plastic (with UV stabilizers in related models) | Both housings resist heat and deformation. | |
Standards Family | NEMA 7-pin interface | ANSI C136.41 NEMA 7-pin interface | JL-240XA is tightly aligned with the ANSI C136.41 standard. |
Positioning In Portfolio | Economical 7-pin receptacle | Flagship 7-pin photocell receptacle for demanding applications | JL-240XA targets higher-end smart-city and export markets. |
Where Do Certification, Gold Plating, And Wiring Differences Affect Your Project?
From a distance, gold plating thickness or an extra label might feel like minor details. On a city-scale deployment, those details can determine how many truck rolls you book in year five.
How Do Gold Plating Levels Impact Reliability?
JL-240XA has about 0.7 μm of gold plating on the low-voltage pads. UM-240 instead has about 0.5 μm in your spec sheet. That 0.2 μm difference means:
- Better protection against oxidation and pollution for JL-240XA
- More stable low-voltage connections for dimming and data signals
- Reduced risk of micro-arcing as the node is twisted on and off during maintenance
In practice, if your controllers are sending sensitive 0–10 V dimming or digital signals through those pads, a thicker gold layer helps keep contact resistance low as years of humidity, dust, and vibration accumulate.
What About Wiring Length And Handling?
UM-240’s slightly longer leads (around 8″) can make life easier when the driver, surge protector, and photocell street light controller are spread out inside a compact luminaire body. JL-240XA follows the typical lead lengths used across Long-Join’s NEMA family, which is already optimized for standard LED street light layouts.
If your mechanical design is tight and you often find yourself saying “two more centimeters of cable would be perfect,” the small difference in lead length can reduce splicing or extensions in the field.
How Do Certifications Shape Market Access?
Long-Join’s JL-240 series has UL and CE-recognized variants, such as JL-240TZ-14, for projects where third-party safety marks are mandatory. UM-240, on the other hand, is positioned in the catalogue as “Nothing Related Quality Certificate,” making it a cost-effective choice where:
- Local acceptance relies on the luminaire maker’s own type-testing
- The project is in a market with flexible certification requirements
- Price sensitivity outweighs the need for a long list of international marks
So, if you are bidding in regions that strictly require يو ال / م on every component, JL-240XA or a related UL-listed photocell light switch receptacle is usually safer. Where local utilities rely more on IEC-based luminaire testing and manufacturer reports, UM-240 can still be a rational choice within the complete system test.
How Does The UM-240 7-Pin Dimming Signal Line Enable Smart Lighting Control?
If the JL-240XA is the “premium” option, why does UM-240 still exist? Because many projects need a practical, budget-friendly interface that can still talk to smart controllers.
Both UM-240 and JL-240XA follow the NEMA 7-pin layout, where:
- 4 extra pins carry dimming, control, or communication signals
In UM-240, this 7-pin structure separates power and signal wiring clearly. That helps:
- Reduce interference between mains and control lines
- Keep 0–10 V or digital lines cleaner for dimming curves
- Improve safety for maintenance teams who can quickly recognize which wires are live and which are control
Paired with a modern photocell for street light controller like Long-Join’s JL-217C photo controller, the UM-240 can:
- Switch lights automatically from dusk to dawn
- Exchange dimming commands for late-night energy savings
- Support remote monitoring when the controller includes wireless communication
This makes UM-240 a good fit for municipalities that want to move from simple “on/off” photo switch sensor operation to basic adaptive lighting, without paying for every possible certification up front.
Why Does Gold Plating Thickness Matter For Long-Term Reliability?
It’s tempting to see gold plating thickness as a cosmetic spec. In outdoor lighting, it’s directly tied to service life and dimming stability.
Street luminaires face:
- Constant thermal cycling from day–night temperature swings
- Vibration from wind and traffic
- Polluted, salty, or humid air depending on geography
Under these conditions, even small increases in contact resistance at the low-voltage pads can introduce noise, flicker, or failures in photocell LED street light controllers. International guidelines for road lighting emphasize reliability and reduced maintenance trips as core drivers of LED adoption.
By choosing a receptacle like ANSI C136.41 7-pin Photocell Receptacle JL-240XA, with thicker gold plating and strong spring contacts, you give every connected node a better electrical “landing pad” for:
- Stable 0–10 V dimming
- Reliable power for radios and auxiliary sensors
- Fewer intermittent faults caused by micro-corrosion
This is especially important when your street light controller also manages wireless communications, metering, or advanced diagnostics. The more data flowing through those pads, the more you benefit from the extra plating that JL-240XA provides.
خاتمة
If you view the socket as a long-term infrastructure component, JL-240XA is the safer “install it once and forget it” option for demanding, high-visibility projects. When the business case is still developing, or certification demands are more flexible, UM-240 gives you a smart-ready, budget-friendly مقبس التحكم الضوئي that can grow with your مستشعر ضوء الخلية الضوئية الخارجية strategy.
In both cases, designing around the NEMA 7-pin interface keeps your luminaires open for future upgrades — from simple خلية ضوئية من الغسق إلى الفجر nodes to full controller intelligent lighting platforms with remote diagnostics.
الروابط الخارجية:
●https://en.wikipedia.org/wiki/Polybutylene_terephthalate
●https://en.wikipedia.org/wiki/NEMA_connector
●https://www.ul.com/solutions
●https://europa.eu/youreurope/business/product-requirements/labels-markings/ce-marking/index_en.htm
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