Eaton SPECIAL964A Molded Case Circuit Breaker - UL 489

Part Number: SPECIAL964A
SPECIAL964A
Manufacturer
Eaton
Part number
SPECIAL964A
Category

Quick Summary

Eaton SPECIAL964A molded case circuit breaker provides reliable protection in industrial control panels and power distribution. Designers often wrestle with precise trip coordination, limited panel space, and seamless accessory integration in compact installations. UL 489 certification underscores safety and durability, and Eaton backs this model with a one-year warranty for field reliability. Built on a K-frame complete breaker design, it supports three-pole configurations with fixed thermal and fixed magnetic trips and offers line/load terminals. Its TA300K line and load design, rear pigtail connections, and DC/AC compatibility deliver a scalable solution that reduces downtime and accelerates panel assembly for automation projects. This combination supports safer operation, easier maintenance, and improved overall system uptime for industrial environments.

Product Information

Extended Description

SPECIAL964A Eaton: Eaton Series C complete molded case circuit breaker, K-frame, HKD, Fixed thermal, fixed magnetic trip, Three-pole, 300A, Line and load, Vdc, 2A-2B rear with 36 in right pigtail, 12-24 Vac/dc rear with 36 in left pigtail, TA300K, TA300K
Product Name
Eaton Series C complete molded case circuit breaker
Catalog Number
SPECIAL964A
UPC
782116894178
Product Length/Depth
4.06 in
Product Height
8.25 in
Product Width
8.25 in
Product Weight
9.5 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 489
Catalog Notes
Z01 Lugs (TA300K)
Type
Complete breaker
Amperage Rating
300 A
Trip Type
T186
Circuit breaker type
HKD
Circuit breaker frame type
Complete breaker
Auxiliary switch
2A-2B rear with 36 in right pigtail
Shunt trip
12-24 Vac/dc left pigtail rear with 36 in leads
Terminals
Line and load
Frame
K
Class
Vdc
Line
TA300K
Prod load
TA300K
Number of poles
Three-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 Plug-in adapters for molded case circuit breakers product aid Plug-in adapters for molded case circuit breakers product aid Plug-in adapters for molded case circuit breakers product aid Plug-in adapters for molded case circuit breakers product aid Plug-in adapters for molded case circuit breakers product aid Plug-in adapters for molded case circuit breakers product aid Plug-in adapters for molded case circuit breakers product aid Breaker service centers Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2 Circuit Breakers Explained Circuit Breakers Explained Eaton Specification Sheet - SPECIAL964A Eaton Specification Sheet - SPECIAL964A Eaton Specification Sheet - SPECIAL964A Eaton Specification Sheet - SPECIAL964A Eaton Specification Sheet - SPECIAL964A Selling Policy 25-000 - Distribution and Control Products and Services
Three-pole HKD frame with a 300 A rating delivers robust protection and arc-quenching performance, reducing the risk of equipment damage during overload events and enabling safer maintenance in automation panels. This translates to measurable uptime improvements and simplified fault isolation in high-demand DC power distribution networks. Line and load terminals provide straightforward wiring with a clean, maintainable installation path, while the 2A-2B rear with 36 in right pigtail and the 12-24 Vac/dc rear with 36 in left pigtail offer flexible accessory routing for multi-wire terminations and remote signaling. Compatibility with TA300K and Z01 lugs expands integration options, helping engineers standardize protection across multiple lines and projects. The DC-capable Class Vdc protection and T186 trip profile address modern control-system needs, delivering predictable, repeatable protection in critical processes. With a compact footprint (4.06 in depth; 8.25 in height and width) and a 9.5 lb weight, installation in tight control panels is easier, reducing labor costs and enclosure modifications. Eaton’s UL 489 certification, documented warranty, and centralized service support help minimize total cost of ownership and ensure long-term reliability in mission-critical applications.

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FAQs

The SPECIAL964A uses a three-pole HKD frame designed for line and load terminals. Install it in an appropriate enclosure, connect the TA300K line and load wiring, and route the 2A-2B auxiliary rear connection on the right and the 12-24 Vac/dc shunt trip on the left with the supplied 36 inch leads. Ensure correct polarity and secure mounting to maintain proper clearance from heat sources and moisture. Verify the 300 A rating matches system needs and test trip operation before commissioning.
Key specs include a three-pole HKD frame, 300 A amperage rating, T186 trip type, Class Vdc, line and load terminals, and a complete breaker design. The unit supports 2A-2B rear accessories with 36 in right pigtails and 12-24 Vac/dc left pigtails, with TA300K labelling for line/load, Z01 lug compatibility, and UL 489 certification. Its compact dimensions—4.06 in depth, 8.25 in height, and 8.25 in width—plus a 9.5 lb weight make it suitable for space-constrained panels.
Yes, it is designed for DC protection with a Class Vdc rating and a fixed thermal + fixed magnetic trip arrangement. The T186 trip type provides predictable and repeatable performance under overload and short-circuit conditions, which is critical for DC control circuits. This makes it appropriate for automation and DC distribution panels where reliable shutoff is essential for equipment safety and process integrity.
The primary certification is UL 489, indicating compliance with recognized safety and performance standards for molded case circuit breakers. This certification supports electrical code adherence, interoperability with compatible components, and safer regional operation. While other certifications aren’t listed for this model, UL 489 status, along with Eaton’s warranty policy, provides a solid baseline for compliance in industrial environments.
The SPECIAL964A offers predictable protection with a compact footprint and straightforward wiring, reducing installation time and enclosure space requirements. Its DC/AC compatibility and accessory options (TA300K, shunt trip, auxiliary wiring) support scalable protection across multiple panels, lowering total cost of ownership. In addition, UL 489 certification and Eaton’s warranty help minimize downtime and maintenance costs, contributing to faster project ROI and increased system reliability.