Eaton CB1633B120480KG7 Pringle Bolted Switch - UL Listed
Part Number: CB1633B120480KG7
Quick Summary
The Eaton pringle bolted pressure contact switch CB1633B120480KG7 provides robust fault protection for large motor control panels. This device supports a 1600A rating with 2NO-2NC contacts, bottom-feed configuration, and fusible protection, enabling safe, reliable operation in demanding environments. Engineers frequently encounter mis-trips, improper sequencing, and integration challenges when upgrading high-current switchgear; reliability and clear wiring are essential. UL Listed certification accompanies compatibility with multiple NEMA enclosures (NEMA 1, 3R, 4, 12), giving confidence across plant sites. Designed for low-voltage distribution and heavy-duty protection, it supports scalable control schemes and easier maintenance, reducing downtime while improving safety and compliance in industrial automation projects.
Product Information
Extended Description
CB1633B120480KG7 Eaton: Eaton pringle bolted pressure contact switch,Interlock,1600A,2NO-2NC,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633B120480KG7
UPC
782116958337
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.
Contact configuration
2 NO-2 NC
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
1600A
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
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB1633B120480KG7
Feature: High current capacity and versatile contact arrangement. Impact: Enables isolation of large motors with a 1600A rating and 2NO-2NC contacts, reducing wiring complexity and the number of devices needed in MCCs. Application: Heavy-duty control panels and motor control centers in manufacturing facilities. Feature: System voltage compatibility of 480V with 120V control voltage. Impact: Simplifies integration with existing plant power distribution and automation networks, improving coordination between protection and control circuits. Application: Industrial plants leveraging low-voltage power distribution and centralized control. Feature: Bottom feed and fusible protection with optional ground fault relay. Impact: Eases enclosure design and enhances circuit protection while enabling safer operation through ground fault monitoring. Application: Panel wiring in harsh environments requiring reliable fault detection. Feature: Interlock capability and auxiliary provisions via catalog notes. Impact: Prevents accidental energization during maintenance and supports tailored protection schemes. Application: Safety-critical disconnects in power distribution equipment. Feature: NEMA ratings and UL Listed certification. Impact: Ensures compliance and suitability for a range of environments, reducing regulator qualification time. Application: Harsh manufacturing and process environments needing proven protection and documentation.
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FAQs
Install with bottom-feed wiring for the three-pole, 2NO-2NC configuration. Wire three conductors for line connections and connect the control circuit to the 120 V supply. Use fusible protection as specified, and observe interlock requirements to ensure proper sequencing during energization and de-energization. Follow UL-listed installation guidelines for safety and compliance.
The CB1633B120480KG7 is rated at 1600A with 2NO-2NC contacts, and supports a 480V system with a 120V control voltage. It is fusible and UL Listed, with NEMA ratings of 1, 3R, 4, and 12. This combination provides robust isolation, fault protection, and compatibility with standard industrial power distribution and control circuits.
Yes. Catalog notes indicate optional ground fault relay capabilities, along with features like blew fuse detection and auxiliary provisions. This enables enhanced safety monitoring and selective fault signaling in complex protection schemes without replacing existing switchgear.
UL Listed certification certifies compliance with safety standards, while NEMA ratings 1, 3R, 4, and 12 indicate suitability for indoor, outdoor, wet, and dusty conditions depending on enclosure. These attributes support deployment in harsh industrial environments and streamline regulatory qualification across manufacturing and processing facilities.
Warranty details follow Eaton policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. For ongoing support, refer to Eaton’s service resources and the specification sheet CB1633B120480KG7, which outlines installation, maintenance, and compliance guidelines to maximize uptime.