Eaton JGSDC3150FAW PV Guard Solar MCCB - UL 489
Part Number: JGSDC3150FAW
Quick Summary
The Eaton PV Guard JGSDC3150FAW is a molded case circuit breaker for DC PV protection. Engineers often struggle with reliable DC protection amid installation complexity in solar projects, risking uptime. It is UL 489 listed, with a 150 A rating and high interrupt ratings across 240 V and 600 V deployments. Built on the JG frame, it integrates easily with existing Eaton MCCB architectures and features fixed thermal with adjustable magnetic (T185) trip for precise protection. Designed for three-pole operation, it supports up to 600 Vac and 250 Vdc in PV configurations, helping meet utility and industry standards. This combination delivers robust protection for PV systems, reducing risk, improving compliance, and speeding installation for engineering teams.
Product Information
Extended Description
JGSDC3150FAW Eaton: Eaton Series G DC/PvGard complete molded case circuit breaker, JG-frame, JG, Fixed thermal, adj. magnetic trip, Three-pole, 150A, 600 Vac, 250 Vdc, 85 kAIC at 240 Vac, 40 kAIC at 415 Vac, 35 kAIC at 480 Vac, 18 kAIC at 600 Vac, No term.
Product Name
Eaton PV Guard / Solar complete molded case circuit breaker
Catalog Number
JGSDC3150FAW
UPC
786685494333
Product Length/Depth
3.57 in
Product Height
4.13 in
Product Width
4.13 in
Product Weight
6.5 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
UL 489
Amperage Rating
150 A
Voltage rating
600 Vac, 250 Vdc
Trip Type
T185
Circuit breaker type
JG
Circuit breaker frame type
Complete breaker
Terminals
Without terminals
Frame
JG
Class
Vdc
Interrupt rating
18 kAIC at 600 Vac 85 kAIC at 240 Vac 35 kAIC at 480 Vac 40 kAIC at 415 Vac
Number of poles
Three-pole
PVGard solar circuit breakers product aid
Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2
Value of Circuit Breakers for PV Systems and Eaton PVGard Solar Circuit Breakers
Eaton Specification Sheet - JGSDC3150FAW
Eaton Specification Sheet - JGSDC3150FAW
Feature: 150 A amperage rating with 600 Vac and 250 Vdc limits provides direct DC protection for PV feeders. Business impact: This capability supports robust fault interruption with low nuisance trips and reduces the risk of equipment damage and downtime during peak PV generation. Application: Perfect for three-pole PV disconnects, string inverters, and DC bus protection in commercial rooftops and utility-scale installations. Feature: Fixed thermal with adjustable magnetic trip (T185) enables selective coordination in variable operating environments. Business impact: It improves fault discrimination, minimizes unintended trips, and protects both equipment and personnel during transients common to PV sites. Application: Ideal where temperature swings and irradiance changes require precise protection control in DC circuits. Feature: UL 489 listing and the JG frame with three poles. Business impact: UL 489 provides recognized safety and performance compliance; JG frame supports straightforward integration with existing Eaton MCCB inventories. Application: Use in PV protection panels and control cabinets demanding durable, field-proven MCCBs for reliability and regulatory alignment. Feature: Terminals without terminals and compact footprint. Business impact: Simplifies installation, reduces panel depth, and speeds field assembly, lowering labor costs. Application: Suited for retrofit projects and new builds where enclosure space is at a premium in solar DC distribution. Feature: Warranty and documentation support from Eaton. Business impact: Ensures access to specification sheets, product aids, and ongoing service, protecting total cost of ownership. Application: Ideal for projects requiring traceable documentation and long-term part availability in critical PV protection applications.
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FAQs
Yes. The JGSDC3150FAW is designed around the JG frame and is specified as a complete molded case breaker without terminals, facilitating straightforward mounting in compatible Eaton MCCB panels. Its three-pole form factor supports common PV protection layouts, and its terminals-less configuration speeds up field assembly while reducing error-prone wiring steps.
The breaker provides a 150 A rating with 600 Vac and 250 Vdc voltage ratings, and a T185 trip mechanism with fixed thermal and adjustable magnetic trip. It offers interrupt ratings of 18 kAIC at 600 Vac and higher ratings at lower voltages, enabling robust fault isolation across PV arrays and inverters while supporting selective coordination in mixed-voltages installations.
Yes. It is UL 489 listed, which confirms adherence to recognized safety and performance standards for molded case circuit breakers. This listing supports regulatory compliance in commercial PV installations and eases coordination with other UL-listed devices in protection schemes, reducing the risk of non-conformance during inspections and audits.
The fixed thermal element combined with an adjustable magnetic trip (T185) enables selective coordination by ensuring only the device closest to a fault trips. This reduces nuisance trips caused by transient temperature changes or minor faults, protects downstream equipment, and improves uptime in PV systems with fluctuating irradiance and ambient conditions.
The unit carries Eaton’s standard warranty policy: one year from installation or 18 months from shipment, whichever comes first. Comprehensive technical documentation, product aids, and specifications are available to support procurement, installation, and ongoing maintenance, ensuring long-term part availability and reliable lifecycle support for PV protection projects.