Eaton CB4033B120480GRAX Pringle bolted pressure contact switch - UL Listed
Part Number: CB4033B120480GRAX
Quick Summary
Eaton CB4033B120480GRAX Pringle bolted pressure contact switch is designed to deliver high-current protection for large switchgear and motor control centers. A common challenge in these installations is preventing damaging faults without triggering unnecessary outages or costly downtime. This unit supports single-phase protection with a capacitor trip device (SPVR) and a bottom-feed configuration, offering reliable control power and precise trip performance. It carries UL Listed certification and broad NEMA compatibility (NEMA 1, 3R, 4, 12), helping meet safety and enclosure requirements for industrial environments. By combining rugged protection with flexible options like Ground Fault Relay and Blown Fuse Detection, it improves uptime, simplifies maintenance, and supports compliant, future-proof installations. Weighing 430 lb, it is designed for floor-mounted applications and can accommodate bottom feed fuse configurations.
Product Information
Extended Description
CB4033B120480GRAX Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with no lights (trips switch),4000A,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB4033B120480GRAX
UPC
782116950553
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
4000A
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 no lights (trips switch)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB4033B120480GRAX
The CB4033B120480GRAX delivers 4000A at 480V system voltage, enabling protection of large feeders and high-current loads with minimal risk of nuisance trips, which translates to lower maintenance costs and reduced downtime. The capacitor trip device (SPVR) and charge-before-close mechanism provide a controlled, rapid trip sequence that minimizes arc flash exposure and equipment wear while preserving downstream process continuity in critical lines. Bottom-feed fuse configuration simplifies wiring and integration in retrofit projects, reducing installation time and conduit complexity while maintaining robust fault isolation. With UL Listed certification and broad NEMA compatibility (1, 3R, 4, 12), this switchgear component offers proven safety and environmental resilience in diverse plant environments. Optional Ground Fault Relay, Blown Fuse Detection, and Auxiliary Contact Provisions enable tailored protection schemes, lowering total ownership cost and enabling proactive maintenance planning. The unit’s heavy-duty construction, including a 430 lb weight, supports stable floor-mounted installation in demanding industrial settings and reduces vibration-related wear over time.
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FAQs
Installation requires aligning the three-pole, three-wire configuration with bottom-feed fuses and the SPVR capacitor trip device. Ensure enclosure clearance for a 430 lb unit, mount on a solid base, and connect control power through the 120 V control circuit. Verify ground fault relay options are configured per site safety standards and lockout/tagout procedures are followed during commissioning.
The switch is rated for 4000A with a 480 V system voltage and 120 V control voltage. It is a three-pole, three-wire, fusible device designed for 480 V operation and bottom-feed configuration. These ratings support heavy feeder protection and compatibility with standard low-voltage control circuits in industrial plants.
Yes, the catalog notes indicate optional Ground Fault Relay and Blown Fuse Detection capabilities. The product is configured for ground fault protection with a ground fault and control power transformer, enabling enhanced safety and rapid fault isolation without compromising system uptime.
The CB4033B120480GRAX is UL Listed, supporting safety compliance for industrial applications. The unit also offers broad NEMA compatibility (1, 3R, 4, 12) for use in various environmental enclosures. There is no explicit SIL, CE, or IP rating listed in the provided data.
The product is covered under Eaton's standard policy: 25-000, one year from the date of installation or eighteen months from the date of shipment, whichever occurs first. Warranty coverage typically includes parts and labor for manufacturing defects, with terms dependent on installation specifics and site conditions.