Eaton CB3033B120480KGR Pringle bolted pressure contact switch - UL Listed
Part Number: CB3033B120480KGR
Quick Summary
Eaton pringle bolted pressure contact switch delivers reliable interlock protection for medium to large switchgear assemblies. Engineers often struggle with coordinating safe trip, ground-fault detection, and space constraints in new installations. This device carries UL Listed certification and is compatible with NEMA 1, 3R, 4, and 12 enclosures for broad installation flexibility. In practice, it supports high-current protection with a 3000A rating and 480V system voltage, while offering a 120V control circuit for reliable control. This combination reduces maintenance frequency and supports quick fault isolation, helping uptime-critical operations. For procurement, the UL Listed designation and engineered protection options simplify compliance and budgeting.
Product Information
Extended Description
CB3033B120480KGR Eaton: Eaton pringle bolted pressure contact switch,Interlock, 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
CB3033B120480KGR
UPC
782116951512
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
Interlock, Single-phase voltage relay with capacitor trip device (SPVR)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB3033B120480KGR
Feature — High-current protection (3000A) provides robust fault isolation, reducing arc flash exposure and equipment damage. Business impact — This translates to shorter downtime, lower repair costs, and greater asset availability. Application — Ideal for main feeders and motor control centers in 480V switchgear installations where reliability is critical. Feature — System voltage compatibility at 480V with a 480V max rating and a 120V control circuit. Business impact — Enables seamless integration with plant control systems while safeguarding critical loads. Application — Suitable for large industrial panels requiring coordinated control and protection. Feature — Three-pole, bottom-feed configuration with fusible protection. Business impact — Simplifies wiring topology and enhances fault-clearing speed in compact layouts. Application — Fits bottom-feed installations in restricted spaces without sacrificing protection quality. Feature — SPVR capacitor-trip and interlock capabilities with optional ground fault and auxiliary provisions. Business impact — Improves single-phase protection sequencing and fault diagnosis, reducing unplanned downtime. Application — Supports interlock schemes in complex switchgear with additional protection options. Feature — UL Listed certification and enclosure compatibility (NEMA 1, 3R, 4, 12). Business impact — Eases compliance, procurement, and field installation across multiple facility types. Application — Ideal for OEMs and end users standardizing across diverse plant environments. Feature — Flexible installation and accessory options with ground fault relay, blown fuse detection, and auxiliary contacts. Business impact — Enables tailored protection configurations while preserving serviceability. Application — Useful for upgrades and retrofits where existing safety and monitoring capabilities must be extended. Feature — Warranty and service support aligned with Eaton policy; broad spare parts availability. Business impact — Reduces lifecycle costs and downtime risk, supporting long-term asset performance. Application — Valuable for mission-critical applications requiring predictable maintenance and parts supply.
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FAQs
CB3033B120480KGR is designed for bottom-feed, three-pole, three-wire installations in 480V switchgear. It uses fusible protection and supports optional Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Kirk Provisions, and Auxiliary Contact Provisions. It fits NEMA-rated enclosures (1, 3R, 4, 12) and UL Listed, offering straightforward field upgrades or replacements.
Single-Phase Voltage Relay (SPVR) in CB3033B120480KGR provides capacitor-trip to ensure a controlled, pre-charged closing sequence for single-phase protection. When a fault is detected, the capacitor trip accelerates opening to isolate the circuit, improving safety and minimizing arc energy. This feature supports dependable ground fault detection and aligns with interlock configurations in complex switchgear.
UL Listed indicates conformity with recognized safety standards for electrical components, allowing easier regulatory acceptance and insurance coverage. For CB3033B120480KGR, UL Listing complements its 3000A amperage rating, 480V system voltage, and three-pole construction. This certification supports reliable performance under fault conditions and provides procurement teams with verifiable safety benchmarks. It also facilitates design harmonization with other UL-listed Eaton products and compatible enclosures.
Bottom-feed, three-pole installations require appropriate mounting space, secure wiring routes, and correctly sized conductors for 3000A protection. Ensure a control power transformer is present for ground fault sensing, and use the recommended auxiliary contacts and provisions as needed. The unit is rated for NEMA 1, 3R, 4, 12 environments, simplifying retrofits and new builds in industrial facilities.
Warranty is Eaton Selling Policy 25-000, one year from installation or eighteen months from shipment, whichever comes first. Regular maintenance includes checking ground fault relay options, fuse status, and auxiliary contacts, while ensuring capacitor-trip devices and SPVR circuits remain within tolerance. Spare parts availability and UL Listing support longer life-cycle costs and reduced downtime.