Cutler Hammer, Div of Eaton Corp Accessories Catalog
Specifications and Main Features
Frequently Asked Questions
User Manual
47-182
Pushbuttons & Indicating Lights
30.5 mm Corrosion Resistant Watertight/Oiltight
March 2008
E34 Series, Components — Contact Blocks
47
Contact Blocks
Standard Contact Blocks
■ UL A600/P600 rated
■ Color-coded plungers – red/green
for NC/NO circuits
■ Silver contact tips with “reliability
nibs”
■ Black (opaque) or amber (translu-
cent) housings
■ Pressure plate or spade terminals
■ Fingerproof shrouds (for pressure
terminals only)
Logic Level Contact Blocks
■ UL A600/P600 rated
■ Black plungers
■ Inert palladium knife-blade contacts
■ Black (opaque) housings
■ Pressure plate or spade terminals
■ Fingerproof shrouds not available
Table 47-297. Contact Blocks
SymbolCircuit Description/
1NCStack up to 6 blocks (6 circuits)
Blank
No
Plunger
1NOStack up to 6 blocks (6 circuits)
Blank
No
Plunger
NO-NC Stack up to 6 blocks (12 circuits)
2NCStack up to 6 blocks (12 circuits)
2NOStack up to 6 blocks (12 circuits)
Special Function Blocks
LONCLate opening NC. Stack up to 6 blocks
Blank
No
Plunger
ECNO
-NC
ECNO
-NO
2LONC Two late opening NC contacts. Stack up to 6
LONCECNO
2NO2NC
Special Purpose Blocks
All 10250T contact blocks shown are suitable
for use on standard 10250T and E34 operators. These contact blocks are not suitable for
Class I Division 2 type 10250T or E34 devices.
Contact blocks with spade terminals are limited to a maximum of one contact block per
operator and minimum spacing between
devices is 2.5” (63.5 mm). Not suitable for
use in 10250T or E34 enclosures. Also available in amber housing. Not available with
fingerproof shrouds.
Notes
unless otherwise noted.
unless otherwise noted.
unless otherwise noted.
unless otherwise noted.
unless otherwise noted.
(6 circuits) unless otherwise noted.
Early closing NO and standard NC. Stack up to 6
blocks unless otherwise noted.
Early closing NO and standard NO.
Stack up to 4 blocks unless otherwise noted.
blocks unless otherwise noted.
Overlapping contacts. Stack up to 4 blocks
unless otherwise noted.
Four circuits in single block depth. Rated 300V
max. Stack up to 4 blocks unless otherwise noted.
Special Function Contact Blocks
■ UL A600/P600 rated
■ Black plungers
■ Silver contact tips with “reliability
nibs”
■ Black (opaque) housings
■ Pressure plate terminals only
■ Fingerproof shrouds not available
Special Purpose Contact Block
■ Maximum 300V rated
■ Black plungers
■ Silver contact tips with “reliability
nibs”
■ Black (opaque) housings
■ Pressure plate terminals only
■ Fingerproof shrouds not available
Reliability Nibs
Reliability nibs are the hallmark of
Eaton’s Cutler-Hammer contact blocks.
A pointed silver nib on the contact tip
StandardLogic Level
Pressure
Terminals
10250T1
Special function contact blocks are not suitable for use with roto-push operators, 3position push-pull operators, or 4-position
selector switches.
ECNO contact blocks are not suitable for use
with 2-position joysticks or when operators
are used with padlock attachments.
Catalog
Number
10250T5110250T5910250T51E10250T59E
10250T5310250T6010250T53E10250T60E
10250T110250T4010250T1E10250T40E
10250T310250T4210250T3E10250T42E
10250T210250T4110250T2E10250T41E
10250T71
10250T47
10250T57
10250T45
10250T55
10250T44
Spade
Terminals
Price
Catalog
U.S. $
Number
—10250T71E
—10250T47E
—10250T57E
—10250T45E
—10250T55E
—
ensures reliable switching from logic
level (5V) up to 600V applications.
Therefore standard contact blocks can
be used for most logic level applications where the contacts are not
exposed to any harsh environmental
conditions.
Palladium Contacts
Palladium, which is more inert than
gold, is well suited for voltages and
currents approaching zero and is recommended for applications where
environmental conditions are a factor.
Maximum Contact Block Mounting per Operator Type
OperatorMax.
Pushbuttons62- or 3-Position
Push-Pull
Operators
Roto-Push
Operators
Pressure
Terminals
Price
Catalog
U.S. $
Number
Special purpose 10250T44 contact blocks
are not suitable on selector switches or rotopush operators. Okay to use with 3-position
push-pull operators only on low voltage
(30V or less) circuits.
Legend plates can be supplied printed
on black, red, silver or white field. To
order legend printed on a color other
than indicated — add Suffix Code to the
end of the Catalog Number as follows:
“R” for Red field;
“W” for White field; or
“S” for Silver field.
Example: E34SP26R — Standard plate
with red field marked OPEN.
Table 47-299. For Pushbutton Operators and
Indicating Lights