Eaton SPECIAL1651 Molded Case Circuit Breaker - UL Listed

Part Number: SPECIAL1651
SPECIAL1651
Manufacturer
Eaton
Part number
SPECIAL1651
Category

Quick Summary

Eaton SPECIAL1651 molded case circuit breaker is a reliable protection device for motor feeders and control panels. Engineers often struggle to balance high fault withstand with wiring flexibility in compact enclosures. This UL Listed Series C MCCB delivers a 400 A rating with 65 kAIC at 240 Vac and 35 kAIC at 480 Vac, plus a non-interchangeable thermal-magnetic trip for predictable operation. Built for field installs, it supports 2A-2B rear wiring with a 48 inch right pigtail and a left pigtail option, streamlining control wiring. When paired with Eaton MOEM MCCB resources and a solid warranty, it helps meet code requirements while reducing long-term maintenance and replacement costs.

Product Information

Extended Description

SPECIAL1651 Eaton: Eaton Series C complete molded case circuit breaker, K-frame, KDB, Non-interchangeable thermal-magnetic trip, Two-pole, 400A, 65 kAIC at 240 Vac, 35 kAIC at 480 Vac, 2A-2B rear w/48 in right pigtail, 120 Vac or 37.5 Vdc w/ left pigtail
Product Name
Eaton Series C complete molded case circuit breaker
Catalog Number
SPECIAL1651
UPC
786685584140
Product Length/Depth
12.6 in
Product Height
6.3 in
Product Width
6.9 in
Product Weight
11 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
Amperage Rating
400 A
Trip Type
Non-interchangeable thermal-magnetic
Circuit breaker type
KDB
Circuit breaker frame type
Complete breaker
Auxiliary switch
2A-2B rear with 48 in right pigtail
Shunt trip
120V
Frame
K
Mounting hardware
Imperial
Interrupt rating
65 kAIC at 240 Vac 35 kAIC at 480 Vac
Number of poles
Two-pole
Application of Multi-Wire Terminals for Molded Case Circuit Breakers Application of Multi-Wire Terminals for Molded Case Circuit Breakers Application of Multi-Wire Terminals for Molded Case Circuit Breakers Power metering and monitoring with Modbus RTU product aid Power metering and monitoring with Modbus RTU product aid Power metering and monitoring with Modbus RTU product aid Power metering and monitoring with Modbus RTU product aid Power metering and monitoring with Modbus RTU product aid Power metering and monitoring with Modbus RTU product aid Power metering and monitoring with Modbus RTU product aid Breaker service centers Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2 Circuit breakers explained Circuit breakers explained MOEM MCCB product selection guide MOEM MCCB product selection guide MOEM MCCB product selection guide MOEM MCCB product selection guide MOEM MCCB product selection guide
Feature: 400 A ampacity with 65 kAIC at 240 Vac and 35 kAIC at 480 Vac. Business Impact: Provides robust short-circuit protection for demanding industrial loads, minimizing arc flash risk and equipment damage. Application: Motor feeders and power distribution panels in manufacturing lines. Feature: Non-interchangeable thermal-magnetic trip within a K-frame Complete breaker (KDB). Business Impact: Ensures consistent protective characteristics across a defined family, reducing mis-match risk in panel builds. Application: Standardized protection in Series C MCCBs for critical systems. Feature: Two-pole design with 2A-2B rear terminals and 48 in right pigtail plus 120V shunt trip and left pigtail option. Business Impact: Simplifies wiring harness integration and enables remote-trip scenarios for safety interlocks. Application: Control panels and MCCB-equipped start/stop circuits. Feature: Shunt trip at 120V and left-side wiring flexibility (120 Vac or 37.5 Vdc with left pigtail). Business Impact: Enhances machine safety with remote disconnection and adaptable control voltages. Application: Industrial automation lines requiring fast isolation. Feature: UL Listed certification and Imperial mounting hardware with a compact footprint (12.6 in Ă— 6.3 in Ă— 6.9 in, 11 lb). Business Impact: Clear safety compliance and straightforward installation in standard enclosures, reducing retrofit time. Application: Panel upgrades and new machine builds across industrial sectors. Feature: Comprehensive dimensional and rating data plus warranty guidance. Business Impact: Enables precise BOM planning, easier sourcing, and predictable post-sale support. Application: Engineering specification, procurement reviews, and field service planning.

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FAQs

Yes. SPECIAL1651 uses the K-frame, complete breaker design from Eaton Series C, ensuring mechanical and electrical compatibility with existing Series C MCCBs. The imperial mounting hardware facilitates straightforward installation in standard panels, reducing retrofit time and avoiding the need for new enclosures.
SPECIAL1651 is rated for 400 A with a thermal-magnetic trip that is non-interchangeable. It provides 65 kAIC at 240 Vac and 35 kAIC at 480 Vac, suitable for high fault current environments. The device includes a 120 V shunt trip and 2A-2B rear terminals with a 48 inch right pigtail, enabling flexible remote signaling and wiring configurations.
Yes, the PART is designed for industrial control panels and motor feeders. Its Series C K-frame construction and robust interrupt ratings support demanding MCCB applications. While not providing an IP rating in the data, its UL Listed certification confirms conformity to recognized safety standards, making it suitable for many industrial control installations with proper enclosure protection.
SPECIAL1651 carries UL Listed certification, signifying conformity with recognized safety standards for molded case circuit breakers. This certification supports compliance with national electrical codes in many regions, facilitating safer panel builds and easier inspector acceptance when integrated into standard Eaton MCCB configurations.
The 400 A rating and high interrupt capability reduce the likelihood of nuisance trips and unplanned outages, contributing to higher uptime. The integrated wiring options and remote trip capability streamline maintenance and testing, potentially lowering labor costs. The UL Listed certification and Eaton support ecosystem also aid in faster procurement and reliable after-sales service.