Eaton CB3033B120480GR - Bolted Pressure Switch UL Listed
Part Number: CB3033B120480GR
Quick Summary
CB3033B120480GR is a bolted pressure contact switch engineered for heavy‑duty protection in 480V distribution environments. It helps prevent nuisance trips and unplanned downtime by incorporating a capacitor trip device (SPVR) with ground-fault protection for reliable fault signaling. UL listed certification supports regulatory compliance, while its NEMA 1/3R/4/12 enclosure ratings and bottom-feed design suit rugged industrial spaces. This solution pairs with Eaton switching devices and distribution controls to deliver robust protection, easier installation, and predictable maintenance in demanding facilities.
Product Information
Extended Description
CB3033B120480GR Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR),3000A,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB3033B120480GR
UPC
782116899272
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)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - CB3033B120480GR
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: 3000A amperage rating with 480V system voltage. Business impact: protects high‑capacity circuits and large motors against severe fault currents, reducing equipment damage and downtime. Application: switchgear assemblies and large motor feeders, enabling safe, reliable operation in industrial plants. Long-tail keywords: high amperage protection, motor protection, 480V switchgear. Feature: Single-phase relay with capacitor trip device SPVR and ground-fault capability. Business impact: fast fault clearance, minimized arc flash risk, and safer start-up sequences. Application: panelboards and MCCs requiring rapid, controlled tripping. Long-tail keywords: SPVR, ground-fault protection, capacitor trip. Feature: Bottom feed fuse configuration with ground fault relay options. Business impact: simplified installation and future-proofing, reducing wiring errors and service time. Application: retrofits and new builds in constrained enclosures. Long-tail keywords: bottom feed configuration, auxiliary contact provisions. Feature: NEMA ratings and UL Listed certification. Business impact: ensures compliance with industry standards and enclosure suitability across harsh environments. Application: harsh factory floors, outdoor-rated enclosures, and mission-critical power distribution. Long-tail keywords: NEMA 1/3R/4/12, UL Listed. Feature: Optional features like Ground Fault Relay, Blown Fuse Detection, and Auxiliary Contacts. Business impact: scalable protection schemes and proactive maintenance capability. Application: future upgrades and system integration in automated plants. Long-tail keywords: auxiliary contact provisions, blown fuse detection, Kirk provisions.
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FAQs
CB3033B120480GR uses a bottom feed and bottom-feed fuse configuration, which simplifies wiring and reduces enclosure changes in retrofits. When installing, verify proper alignment with three-pole terminals, ensure adequate clearance for heat dissipation, and plan for optional accessories like auxiliary contacts or a ground fault relay to match your protection scheme.
The unit employs a three-pole design with a single-phase capacitor trip device (SPVR) that provides effective protection in multi‑pole panels. This architecture enables selective tripping and fault isolation in 480V systems, reducing the impact on healthy phases while delivering fast protection for the protected circuit.
CB3033B120480GR is UL Listed, indicating compliance with recognized safety standards. It also carries NEMA enclosure compatibility ratings (NEMA 1, 3R, 4, 12), ensuring suitability for a range of indoor and weather‑exposed environments in industrial plants.
SPVR provides a capacitor trip mechanism that precedes closing of the switch, preventing inrush and reducing the likelihood of cascading faults. This reduces arc flash risk, minimizes nuisance tripping, and shortens downtime by ensuring only the faulted circuit is isolated.
Options include Ground Fault Relay, Blown Fuse Detection, Auxiliary Contact Provisions, Kirk Provisions, and Auxiliary Contacts. These enable expanded protection schemes, easier integration with control systems, and scalable maintenance plans without replacing the switch.