External accessories provide additional functionality which allow the moulded case breakers to be used in most applications.
End Cap Kit
The End Cap Kit slides onto the line or load conductor of the circuit breaker and acts as a threaded adapter for the conductor
to accept a ring terminal or other bolt-on connector. The end cap kit is available with English and metric thread sizes.
(Field installation only.) Listed per UL File E7819.
The Keeper Nut slides onto the line or load conductor of the circuit breaker and acts as a threaded adapter for the conductor
to accept a ring terminal or other bolt-on connector. The keeper nut is available with English and metric thread sizes. Screws
and washers are supplied by customer. (Field installation only.) Listed per UL File E7819.
Field-installed Multiwire Connectors for the load side (OFF) end terminals. They are used to distribute the load from the
circuit breaker to multiple devices without the use of separate distribution terminal blocks. Multiwire lug kits include
mounting hardware, insulators and tin-plated aluminum connectors to replace three mechanical load lugs. UL listed for copper
only as used on the load side (OFF) end.
Plug-in Adapters simplify installation and front removal of circuit breakers. Individual line and load plug-in adapters are
available for rear connection applications on 2-, 3- and 4-pole circuit breakers. Common mounting plates for line- and
load-end adapters are available. One Plug-in Adapter Kit is required for line-end and one for load-end.
Rear Connecting Studs Product Description
Rear Connecting Studs are available in several sizes to accommodate specific fixed-mounted circuit breaker applications. Each
rear connecting stud assembly consists of one stud and one tube. To maintain proper clearances between poles, select alternate
long and short stud assemblies for circuit breakers with more than one pole. One assembly is required for line-end and one for
load-end of each pole. Tubes must be ordered separately. Connecting studs are available only with English thread
Panelboard Connecting Straps
Panelboard Connecting Straps are used to connect the circuit breaker terminals to the panelboard bus. The panelboard
connecting straps are available with various ratings for outside and center poles. (Field installation only.) Panelboard
connecting straps are available to meet the needs of most standard panelboard applications. Style numbers for mounting
brackets for CDP panelboard installations are also included.
Terminal Shields provide protection against accidental contact with live line side terminations. Terminal shields are
fabricated from high dielectric insulating material and fasten over the front terminal access openings. Small openings in the
shields provide limited access to the terminals for tightening connectors. (Field installation only.)
Terminal End Covers
The Terminal End Covers are designed for use in motor control center applications where, because of confined spaces, line side
conductors are normally custom fitted. The moulded end covers are made of high dielectric glass-polyester and slide over the
line ends of the circuit breaker. Close fitting conductor openings are moulded into the end covers. The end cover and circuit
breaker case fit together to form terminal compartments that isolate discharged ionizing gases during circuit breaker
tripping. Terminal end covers are available with two conductor opening diameters, 0.25-inch (6.4 mm) and 0.41-inch (10.4 mm),
and are listed per UL File E7819. (Field installation only.)
Base Mounting Hardware
Hardware for surface mounting of circuit breakers is supplied only on request. Hardware consists of mounting screws and
lockwashers. Order hardware for circuit breaker pole configurations as required.
Base Mounting Plate
Suitable for mounting (6) single-pole circuit breakers.
DIN Rail Adapter
For use with standard 35 mm DIN Rail such as, 35 x 7.5 or 35 x 15 mm per DIN EN50022. Adapter mounting screws included are for
use with 2- and 3-pole circuit breakers. Adapters for 1-pole circuit breakers clip into the base moulding.
The Drawout Cassette is currently for use with the standard 3-pole 65 kA/ 480V AC, 1600A and 2000A RD circuit breakers only.
It consists of two separate components: the movable mechanism which is factory mounted to the circuit breaker frame and the
stationary mechanism which is housed in the cassette and shipped separately.
Handle Locking and Blocking Devices
The drawout mechanism has four positions.
Connected - The breaker is fully connected to the primary stabs and secondary contacts.
Test - The breaker is not connected to the primary stab but is connected to the secondary contacts.
Disconnected - Both the primary stabs and the secondary contacts are disconnected.
Withdraw - The breaker can be removed from the cassette.
Movable mechanism must be ordered with RD or RDC circuit breaker and is shipped mounted to circuit breaker frame. Stationary
mechanism is ordered separately. All internal accessories must be factory installed for use with drawout.
Lock Dog (non-padlockable)
Mechanical Interlocking Devices
Non-padlockable Handle Block
The Non-padlockable Handle Block secures the circuit breaker handle in either the ON or OFF position. (Trip-free operation
allows the circuit breaker to trip when the handle block holds the circuit breaker handle in the ON position.) The device is
positioned over the circuit breaker handle and secured by a setscrew to deter accidental operation of the circuit breaker
handle. Listed per UL File E7819. (Field installation only.)
Padlockable Handle Block
The device is positioned in the cover opening to prevent handle movement. Will accommodate one 5/16 padlock.
Snap-On Padlockable Handle Lock Hasp
The Snap-On Padlockable Handle Lock allows the handle to be locked in the OFF or ON position. (Trip-free operation allows the
circuit breaker to trip when the handle lock holds the circuit breaker handle in the ON position.) This device was designed
for use on the 1-pole circuit breaker, but may be used on 1-, 2-, 3- and 4-pole styles. The handle lock snaps onto the
escutcheon area of the handle with an optional retaining screw for added secureness. The handle lock will accommodate one
padlock with a 1/4-inch (6 mm) shackle. Listed per UL File E7819. (Field installation only.)
Padlockable Handle Lock Hasp
The Padlockable Handle Lock Hasp allows the handle to be locked in the ON or OFF position. (Trip-free operation allows the
circuit breaker to trip when the handle lock holds the circuit breaker handle in the ON position.) The hasp mounts on the
circuit breaker cover within the trimline. The cover is predrilled on both sides of the operating handle so that the hasp can
be mounted on either side of the handle. The hasp will accommodate up to three padlocks with 1/4-inch (6 mm) shackles, one per
circuit breaker. Listed per UL File E7819. (Field installation only.)
The Cylinder Lock internally blocks the trip bar in the tripped position to prevent the circuit breaker from being switched to
ON. The cylinder lock is factory installed in the left pole only of the circuit breaker cover. Other internally mounted
accessories cannot be installed in the same pole as the cylinder lock. (Factory installation only.)
Key Operated Attachment
Key Interlock Kit (Lock Not Included)
Electrical (Solenoid) Operator
The Key Interlock is used to externally lock the circuit breaker handle in the OFF position. When the key interlock is locked,
an extended deadbolt blocks movement of the circuit breaker handle. Uniquely coded keys are removable only with the deadbolt
extended. Each coded key controls a group of circuit breakers for a given specific customer installation. The key interlock
assembly is Under-writers Laboratories listed for field installation under UL file E7819 and consists of a mounting kit and a
purchaser supplied deadbolt lock. The mounting kit comprises a mounting plate, which is secured to the circuit breaker cover
in either the left- or right-pole position, key interlock mounting screws, and a wire seal. Specific mounting kits are
required for individual key interlock types.
Sliding Bar Interlock
The Sliding Bar Interlock provides mechanical interlocking between two adjacent 3-pole circuit breakers. It is installed on
the enclosure cover between the circuit breakers. When the sliding bar interlock handle is moved from one side to the other, a
bar extends to alternately block movement of the circuit breaker handles and prevents both circuit breakers from being
switched to ON at the same time. Sliding bar interlocks are not UL listed. (Field installation only.)
Walking Beam Interlock
The Walking Beam Interlock provides mechanical interlocking between two adjacent circuit breakers of the same pole
configuration. The walking beam interlock mounts on a bracket behind and between the circuit breakers. A plunger on each end
of the beam is inserted through an access hole in the back plate and base of each circuit breaker. The walking beam interlock
prevents both circuit breakers from being switched ON at the same time. If a walking beam interlock is installed, the wiring
troughs in the back of the circuit breaker case are blocked by the plungers and cannot be used for cross wiring. Factory
modified circuit breakers are required for this application. UL File E3816.
The Electrical (Solenoid) Operator is a single solenoid mechanism that enables local and remote circuit breaker ON, OFF, and
reset switching. The electrical operator is mounted on the circuit breaker cover within the trimline of the circuit breaker.
The electrical operator uses a unique bistable latch that allows the device to operate using one solenoid. The accessory
provides high-speed switching with a maximum operating time of 5 cycles (80 ms), making it suitable for generator
synchronizing applications. Means are provided for remote electrical operation and for local manual operation. A special slide
includes provisions for padlocking the circuit breaker handle in the OFF position. The slide will accept three padlock
shackles with a maximum diameter of 1/4-inch (6 mm) each. An interlock electrically disconnects the solenoid when the
electrical operator cover is removed. The Rating Data Tables provide electrical rating data for the electrical (solenoid)
Electrical (Motor) Operator
The Electrical (Motor) Operator allows the circuit's breaker to be opened, closed or reset remotely. It also has a lock-off
capability and provisions for manual operation. The Electrical (Motor) Operator contains a reversible motor connected to a
ball screw. The ball screw drives the circuit breaker handle. Limit switches and relays are used to control the
Handle Mechanisms are used to operate moulded case circuit breakers, moulded case switches and motor circuit protectors. They
are available in three basic configurations - Flange Mounted, Through-the-Door and Direct (Close-Coupled) - providing safe,
dependable operation and ease of installation. Handle mechanisms are typically used on enclosed circuit breakers, control
panels and motor control centers in many different applications. Eaton has a handle mechanism for virtually any need.
Current Limiters, Energy Monitoring, Alarms, and Test Kits
Type LFD Current Limiter
OPTIM System Components
The LFD Current Limiter is an accessory that bolts to the load end of a standard FDB or FD thermal-magnetic circuit breaker,
providing 200,000A interrupting capacity at up to 600V AC. LFD current limiters for thermal-magnetic circuit breakers are
listed with Underwriters Laboratories under File E47239.
Ground Fault Alarm Unit
The Ground Fault Alarm Unit is a remotely mounted device with a combination indicating light/test button that will light when
the breaker trips or alarms on ground fault. The Ground Fault Alarm Unit requires a separate 120V AC power source to power the
light and the internal relay which has 1NO and 1NC contacts for remote indication. The Ground Fault Alarm Unit can be panel
mounted for ordering with an optional face mounting bracket. For use on Digitrip 310 only, K- through N-Frame.
IQ Energy Sentinel
The IQ Energy Sentinel is a highly accurate, microprocessor-based, breaker-mounted device designed to monitor power and energy
readings. It represents an alternative to watt meters, watt-hour meters, and watt demand meters. Key advantages include
savings in space, lower installation costs, and remote monitoring capability. The IQ Energy Sentinel mounts on the load side
of a Series C F-Frame (150 ampere) circuit breaker. It can be applied on three-phase, four-wire systems, or single-phase,
three-wire systems with voltage connected through phases A and C.
Potential Transformer Module
The Potential Transformer Module is required for Digitrip OPTIM 1050 to provide a voltage input to allow the trip unit to
monitor power and energy as well as power factor. The Potential Transformer Module is a 6 VA transformer with a primary
voltage input of up to 600V line to line. Three 0.1 ampere fuses are provided on the primary of the transformer and can be
used for isolation purposes during dielectric testing. The device is normally panel mounted and can feed up to 16 OPTIM trip
Solid-State (Electronic) Portable Test Kit
The Solid-State (Electronic) Portable Test Kit provides verification of performance of all ratings of Digitrip 310 electronic
trip units installed in circuit breakers while in service under varying load and/or phase imbalance. The test kit operates on
120-volt, 50/60 Hz power; it includes complete instructions and test times for testing long time, short time/instantaneous
operation and optional ground fault operation of the circuit breaker.
Breaker Interface Module (BIM)
The Breaker Interface Module (BIM) is a panel mounted user interface device that is mounted on the front of an electrical
assembly or at a remote location. The BIM is used to access, configure, test and display information for OPTIM trip units and
other devices. The BIM consists of four display windows, eight function buttons, 18 LEDs, and a graphical time/current curve
to provide breaker status, operational information, protection status and energy monitoring. A 24V DC power supply is required
to provide power to the BIM. This is supplied by the switchboard builder to Eaton specifications. The BIM is a member
of Eaton's PowerNet family of communicating devices that connects OPTIM trip units, Digitrip RMS 810/910 trip units and energy
sentinels as a subnetwork system. The BIM can also be connected to a main network via a PONI module to Eaton's PowerNet
The Digitrip OPTIMizer is a hand-held programmer that is used to access, configure, test and display information from OPTIM
trip units. The OPTIMizer plugs into the front of an OPTIM trip unit via an eight-pin telephone jack and is powered by a
nine-volt battery or the auxiliary power module. One highlighted feature is the "Copy" and "Download" commands. Setting up
multiple OPTIM trips can be finished in minutes and with no errors. An Auxiliary Power Module connection provides a trip test
when control power is not present at the breaker. The OPTIMizer is supplied as a standard package to include the programmer,
the eight-pin connection cord, battery and carrying case. The Auxiliary Power Module is optional.
Auxiliary Power Module
The Auxiliary Power Module is a power supply requiring 120V AC input at 50 or 60 Hz that provides a 32V DC output. The
Auxiliary Power Module provides control power for testing an OPTIM trip unit when other means of control power is not
available or for continuous OPTIMizer operation versus temporary with a battery. The Auxiliary Power Module connects into the
top of the Digitrip OPTIMizer via a keyed receptacle. The main application for the Auxiliary Power Module would be for the
testing of a stand-alone non-communicating OPTIM breaker that ordinarily would not have control power.
Note: The OPTIMizer can work off of 32V DC control power, although 24V DC is the standard on OPTIM