Eaton CB1233B120480GRA Bolted Pressure Contact Switch - UL
Part Number: CB1233B120480GRA
Quick Summary
Eaton CB1233B120480GRA bolted pressure contact switch delivers reliable single-phase protection for electrical distribution and motor-control applications. Engineers often grapple with nuisance trips and complex protection coordination, especially when integrating auxiliary relays and ground-fault detection. UL Listed safety certification and broad enclosure compatibility (NEMA 1, 3R, 4, 12) support safer field installation and durable operation. This solution aligns with modern protection schemes while enabling straightforward integration with existing switchgear platforms. By combining robust protection with a practical form factor, it supports reduced downtime, lower lifecycle costs, and easier maintenance, making it a solid choice for industrial power distribution and MCC environments.
Product Information
Extended Description
CB1233B120480GRA Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with three on lights (does not trip),1200A,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1233B120480GRA
UPC
782116956258
Product Length/Depth
16 in
Product Height
32 in
Product Width
24 in
Product Weight
200 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
1200A
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
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - CB1233B120480GRA
Feature: Three-pole, 3-wire bottom-feed design simplifies panel wiring, reducing installation errors and enabling compact footprint. Business impact: faster commissioning, lower labor costs, and easier field service. Application: switchboards and MCCs where space is at a premium. Feature: SPVR capacitor trip device provides controlled, fast tripping for single-phase protection. Business impact: minimizes fault duration and protects downstream equipment, reducing arc flash exposure and downtime. Application: light-industrial and process environments with strict protection timing needs. Feature: Ground fault with control power transformer enhances fault detection and operator safety. Business impact: improves safety margins and simplifies coordination with ground-fault relays. Application: primary distribution panels and control cabinets in harsh environments. Feature: Fusible protection and bottom feed fuse configuration offer flexible protection options and straightforward replacement. Business impact: reduces maintenance complexity and supports selective coordination. Application: retrofits or new installations requiring reliable fuse-based protection. Feature: UL Listed with NEMA-rated enclosure compatibility (1, 3R, 4, 12). Business impact: regulatory compliance and expanded installation options across varied environments. Application: rugged industrial settings, outdoors or damp locations where enclosure protection matters. Feature: High amperage rating of 1200A at 480V with 120V control voltage supports large switchgear and feeder applications. Business impact: lowers the need for paralleling devices, improves reliability, and simplifies sizing. Application: distribution feeders and motor-control assemblies in manufacturing facilities.
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FAQs
This unit uses a bottom feed/fuse configuration for straightforward wiring. Ensure the enclosure supports three-pole, three-wire arrangements and that the control power transformer and ground fault relay options are correctly integrated. Pre-check clearance, torque specs, and ensure alignment with the bottom-feed lugs to avoid mis-wiring during commissioning.
Key ratings include a 1200A amperage rating, 480V system voltage, and 120V control voltage. The device is fusible with SPVR protection and designed for 3-pole, 3-wire operation. It carries UL Listed certification and supports NEMA 1, 3R, 4, and 12 enclosures for broad applicability.
Yes. With UL Listed safety certification and NEMA-compatible enclosure ratings, CB1233B120480GRA is suitable for switchgear and MCCs in harsh environments. The ground-fault option and capacitor trip device enhance reliability, while bottom-feed configuration simplifies panel integration in challenging plant layouts.
The product is UL Listed and supports NEMA 1, NEMA 3R, NEMA 4, and NEMA 12 enclosures. This combination provides safety compliance for diverse industrial settings and enables installation across standard protection cabinets without custom enclosures.
Expected benefits include reduced nuisance trips due to SPVR timing, simplified wiring from bottom-feed design, and fewer accessories required for protection coordination. The UL Listed rating and robust enclosure compatibility contribute to lower maintenance costs and longer service life, delivering a favorable return on investment in high-demand plants.