Eaton CHH2150H4X Thermal Magnetic Circuit Breaker - UL 489
Part Number: CHH2150H4X
Quick Summary
The Eaton CHH2150H4X thermal magnetic circuit breaker provides reliable overcurrent protection for industrial electrical panels and switchgear. Engineers often wrestle with bolt-on mounting fitment, accurate interrupt ratings, and coordination with modular metering stacks. It carries UL 489 certification, reflecting compliance with essential safety standards for NEC-based installations. With a 150 A rating, 120/240 V operation, and bolt-on mounting, the CHH2150H4X offers a compact, easy-to-integrate protection solution that reduces installation time and labor costs. For procurement teams, this translates to predictable lead times, strong warranty coverage, and long-term reliability in critical circuits.
Product Information
Extended Description
CHH2150H4X Eaton: Type CCH Bolt-On Circuit Breaker, Two-Pole, 150A, 120/240V, 42 kAIC
Product Name
Eaton CH thermal magnetic circuit breaker
Catalog Number
CHH2150H4X
UPC
782113032153
Product Length/Depth
9 in
Product Height
5.5 in
Product Width
4.5 in
Product Weight
4.5 lb
Warranty
Limited lifetime
Certifications
UL 489
Used with
For use with 37MM and 37SS three-phase modular metering stacks
Amperage Rating
150 A
Voltage rating
120/240 V
Mounting Method
Bolt-on
Interrupt rating
42 kAIC
Main circuit breaker
CH
Number of poles
Two-pole
Feature: Bolt-on mounting reduces field assembly steps and guarantees repeatable alignment, translating to faster panel builds and fewer fit issues during installation. Benefit: Saves time and lowers labor costs in new builds or retrofits. Application: Ideal for mid-size electrical panels and modular switchgear where quick seating matters. Feature: Two-pole design with 150 A rating at 120/240 V provides targeted protection for motor feeders and distribution lines while offering a robust 42 kAIC interrupt capability. Benefit: Enhanced fault clearance and reduced arc-flash risk in demanding environments. Application: Suitable for feeders in industrial control panels and power distribution blocks. Feature: UL 489 certified construction aligns with widely adopted electrical safety standards. Benefit: Streamlined regulatory compliance, easier procurement approvals, and confident warranty validation. Application: Any NEC-compliant installation needing documented safety certification. Feature: Compatibility with 37MM and 37SS three-phase modular metering stacks enables seamless integration with Eaton metering solutions. Benefit: Simplified metering coordination and faster integration into existing energy-management schemes. Application: Metered panel sections in manufacturing lines and process plants. Feature: Compact footprint (9 in length, 4.5 in width, 5.5 in height) with bolt-on mounting. Benefit: Reduced space requirements and simplified serviceability in crowded panels. Application: Panel densification projects and new-build electrical rooms where footprint matters.
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FAQs
The CHH2150H4X uses a bolt-on mounting method designed for straightforward installation in compatible Eaton panels. Ensure the mounting footprint aligns with the panel frame and that the unit is seated on a solid, ground-referenced bus. Verify conductors are properly sized for 150 A and follow NEC clearances to maintain safe operation and access during maintenance.
CHH2150H4X is specified as a two-pole device rated for 120/240 V, typically used for single-phase or essential two-pole leg protection within a three-phase panel where two-phase protection is required. For full three-phase protection, pair the two-pole units with additional breakers as dictated by the system design and ensure coordination with the overall protection scheme.
A 42 kAIC interrupt rating indicates the maximum fault current the breaker can safely interrupt without damage. This provides robust protection for typical industrial distribution circuits and helps reduce the risk of catastrophic failure or arc-flash exposure in fault conditions. Always coordinate with upstream protection devices to ensure selectivity and reliability.
The CHH2150H4X carries UL 489 certification, confirming adherence to recognized electrical safety and performance standards for low-voltage circuit breakers. UL 489 compliance simplifies regulatory approvals, influences warranty validity, and supports NEC-based installations. This certification is a key factor in risk management and procurement confidence.
Plan for periodic inspection of torque on mounting hardware, conductors, and bus connections to prevent looseness and overheating. The limited lifetime warranty offers protection against manufacturing defects, and the 150 A rating suits mid-range service loads. Maintain spare CH family units on-hand to minimize downtime during routine maintenance or fault-related replacements.