Eaton CB3033B120480GRA Bolted Pressure Contact Switch - UL Listed
Part Number: CB3033B120480GRA
Quick Summary
The Eaton CB3033B120480GRA bolted pressure contact switch is a high-capacity single‑phase relay with a capacitor trip device for robust industrial power protection. Operators often struggle with nuisance trips and slow fault clearance, which disrupt production and drive downtime. This UL Listed device supports enclosure compatibility across plants, including NEMA 1, 3R, 4, and 12, delivering reliable protection in demanding environments. With a three‑pole, bottom‑feed configuration and 480 V system voltage, it simplifies wiring while safeguarding critical loads. The 120 V control circuit eases panel integration, and optional ground fault relay or fuse-detection features enhance safety and regulatory compliance.
Product Information
Extended Description
CB3033B120480GRA Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with three on lights (does not trip),3000A,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB3033B120480GRA
UPC
782116951611
Product Length/Depth
22.5 in
Product Height
32 in
Product Width
40 in
Product Weight
430 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 Listed
Catalog Notes
OPTIONAL Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Kirk Provisions, Auxiliary Contact Provisions, AVAILABLE.
Feed type
Bottom
Fuse configuration
Bottom feed
Ground
Ground fault with control power transformer
Number Of Poles
Three-pole
Number of wires
3
Switch type
Electrical trip with charge-before-close mechanism
Type
Pringle bolted pressure contact switch
Amperage Rating
3000A
Control voltage
120 V
NEMA rating
NEMA 1, NEMA 3R, NEMA 4, NEMA 12
Protection
Fusible
System voltage
480 V
Voltage - max
480 V
Voltage rating
480 V
Special features
Single-phase voltage relay with capacitor trip device (SPVR), BFD with three normally on lights (does not trip)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB3033B120480GRA
Feature: Three‑pole bolted pressure switch with fusible protection and bottom feed. Business Impact: Delivers high current handling (3000 A) and rugged protection for large motors and feeders, reducing unplanned downtime. Application: Industrial motor control centers and packaging lines requiring dependable fault isolation. Feature: Capacitor trip device (SPVR) with three status lights (BFD). Business Impact: Improves fault visibility and reduces nuisance trips by providing a controlled trip sequence plus clear operator indication, shortening troubleshooting time. Application: Power distribution panels in continuous‑process environments where uptime matters. Feature: 480 V system voltage with 120 V control voltage and bottom‑feed, three‑wire configuration. Business Impact: Streamlines wiring, lowers installation time, and simplifies integration with existing control circuits, improving overall project ROI. Application: Heavy‑duty equipment feeds and plant-wide electrical distribution. Feature: UL Listed with NEMA 1, 3R, 4, 12 compatibility and fusible protection. Business Impact: Ensures regulatory compliance and reliable performance in diverse environments, reducing risk of non‑compliance penalties and warranty issues. Application: Panels and enclosures in manufacturing, processing, and material handling. Feature: Optional Ground Fault Relay, Blown Fuse Detection, and Auxiliary/ Kirk provisions. Business Impact: Adds layers of safety and monitoring for transformer‑fed systems and critical loads, enabling proactive maintenance and faster fault diagnosis. Application: Industrial facilities prioritizing enhanced protection and fault diagnostics.
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FAQs
CB3033B120480GRA is designed for three‑pole, bottom‑feed installation in common low‑voltage distribution panels and enclosures rated for NEMA 1, 3R, 4, and 12. It accepts a 480 V main with 120 V control and supports fusible protection, simplifying retrofits by connecting to standard control power transformers and existing switchgear. Verify enclosure space, conductor sizing, and compatible bus bar configurations prior to substitution.
The SPVR capacitor trip device provides a rapid, controlled trip sequence for single‑phase circuits, reducing nuisance trips and improving fault isolation. This feature is complemented by the BFD indicators that confirm status without tripping, aiding operators and maintenance staff in quick fault diagnosis while keeping critical loads protected under fault conditions.
Yes. CB3033B120480GRA is rated for 480 V system voltage with a 120 V control circuit, three poles, and fusible protection. It is well suited for heavy‑duty feeders in manufacturing lines, providing reliable protection for motors and critical loads, while its bottom‑feed configuration simplifies wiring and panel layout in tight installations.
The CB3033B120480GRA carries UL Listed certification, confirming compliance with recognized safety standards for electrical protection devices. The unit is designed for use in enclosures rated to NEMA 1, 3R, 4, and 12, ensuring appropriate protection in varied plant environments. Additional features like optional ground fault and fuse‑detection options support broader regulatory and safety requirements.
The CB3033B120480GRA reduces downtime through reliable protection, a capacitor trip device that minimizes nuisance trips, and clear status indicators. Its bottom‑feed, three‑wire design simplifies installation and future expansions, reducing labor costs. Optional ground fault and fuse‑detection features allow proactive maintenance, lowering unplanned outages and extending equipment life—delivering a favorable return on investment for critical plant assets.