Eaton LGS4300FAG Molded Case Circuit Breaker - 240V 85 kAIC
Part Number: LGS4300FAG
Quick Summary
Eaton LGS4300FAG Molded Case Circuit Breaker protects critical electrical systems in industrial control panels. This MCCB addresses the common challenge of balancing high fault current protection with space and wiring constraints in modern switchgear. It carries UL Listed, CSA Certified, and IEC Rated credentials, supporting CE Marked installations and HACR compatibility for safer motor control. Designed for LG-frame assemblies with metric mounting hardware, it delivers reliable performance at 50/60 Hz and 80% rated operation. For engineers and procurement teams, this means straightforward specification, faster commissioning, and reduced risk across diverse industrial environments.
Product Information
Extended Description
LGS4300FAG Eaton: Eaton Series G molded case circuit breaker, LG-frame, LG, Fixed thermal, adjustable magnetic trip, Four-pole, 300A, 85 kAIC at 240 Vac, 50 kAIC at 480 Vac, 25 kAIC at 600 Vac, Line and load, Metric, 50/60 Hz, 80% rated
Product Name
Eaton Series G complete molded case circuit breaker
Catalog Number
LGS4300FAG
UPC
782116142620
Product Length/Depth
4.09 in
Product Height
7.22 in
Product Width
7.22 in
Product Weight
20 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.
Compliances
CE Marked
Certifications
UL Listed CSA Certified IEC Rated
Catalog Notes
LG breaker is HACR rated
Type
Complete breaker
Amperage Rating
300 A
Trip Type
T185
Circuit breaker type
LG
Circuit breaker frame type
Complete breaker
Rating
80% rated
Series
Series G
Terminals
Line and load
Frame
LG
Frequency rating
50 to 60 Hz
Mounting hardware
Metric
Interrupt rating
50 kAIC at 480 Vac 85 kAIC at 240 Vac 25 kAIC at 600 Vac
Number of poles
Four-pole
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
Breaker service centers
Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2
Eaton Specification Sheet - LGS4300FAG
Eaton Specification Sheet - LGS4300FAG
Eaton Specification Sheet - LGS4300FAG
Feature: 300 A amperage rating with a four-pole LG frame. Benefit: Handles demanding main feeder protections while maintaining precise trip control, reducing nuisance trips and enabling scalable protection across manufacturing lines. Application: Ideal for panelboards and motor control centers where space is at a premium and reliability is non-negotiable. Feature: Fixed thermal, adjustable magnetic trip (T185). Benefit: Tailors overcurrent protection to specific loads and startup surges, improving uptime and equipment life. Application: Industrial automation panels and process control loops. Feature: Interrupt ratings of 85 kAIC at 240 VAC, 50 kAIC at 480 VAC, and 25 kAIC at 600 VAC. Benefit: High short-circuit resilience across voltage ranges, lowering risk of cascading failures. Application: Heavy-duty switchgear and critical power distribution. Feature: Line and load terminals with metric mounting hardware. Benefit: Simplified installation and seamless integration with existing MCCB enclosures. Application: Retrofit projects and new builds with standard metric accessories. Feature: Series G HACR rated, CE marked, UL Listed, CSA Certified, IEC Rated. Benefit: Compliance assurance for global deployments and motor-protection optimization. Application: Global manufacturing facilities and multi-site rollouts. Feature: 300 A rating and 50/60 Hz compatibility with 80% rating. Benefit: Efficient energy management and consistent performance in diverse industrial environments. Application: Industrial plants and logistics centers seeking dependable protection with efficient maintenance cycles.
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FAQs
LGS4300FAG uses the LG frame with line and load terminals and metric mounting hardware, ensuring straightforward replacement or retrofit in existing LG-based MCCB enclosures. It supports compatible accessories and mounting patterns, simplifying procurement and reducing field modification time.
The device is rated for 300 A with a four-pole configuration and a fixed thermal, adjustable magnetic trip (T185). It delivers interrupt ratings of 85 kAIC at 240 VAC, 50 kAIC at 480 VAC, and 25 kAIC at 600 VAC, compatible with 50/60 Hz operation and 80% ratings.
Yes. With HACR rating, UL Listed, CSA Certified, IEC Rated certifications, a four-pole LG frame, and precise magnetic trip, it is well-suited for MCCBs in motor control centers and control panels requiring reliable short-circuit protection and safe motor operations.
LGS4300FAG carries UL Listed, CSA Certified, IEC Rated, and CE Marked with HACR rating, ensuring compliance for North American and international installations and helping streamline regulatory approvals in multi-site projects.
Series G MCCBs offer robust protection with high interrupt ratings, modular components, and metric mounting for easier installation and serviceability. Expected ROI includes reduced downtime from improved protection, smoother commissioning, and lower maintenance costs due to durable construction and readily available replacement parts.