XTOB004CC1 EATON CUTLER HAMMER, XTOB004CC1 Datasheet - Page 145

• Manufacturer Part Number: XTOB004CC1
• Description: Overload Relay
• Manufacturer: EATON CUTLER HAMMER

Specifications of XTOB004CC1

• Overload Adjustment Current Min: 2.4A
• Overload Adjustment Current Max: 4A
• Coil Voltage Dc Max: 220V
• Contactor Direction: Non Reversing
• Coil Voltage Vdc Nom: 220V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

March 2009
Time/Current Curve
Characteristics
The time/current characteristic, the current limiting charac-
teristics and the I
dance with DIN VDE 0660 and IEC 60 947.
The tripping characteristic of the inverse-time delayed over-
load releases (thermal overload releases or “a” releases) for
DC and AC with a frequency of 0 to 400 Hz also apply to the
time/current characteristic.
The characteristics apply to the cold state. At operating
temperature, the tripping times of the thermal releases are
reduced to approximately 25%.
Under normal operating conditions, all three poles of the
device must be loaded. The three main conducting paths
must be connected in series in order to protect single-phase
or DC loads.
With 3-pole loading, the maximum deviation in the tripping
time for 3 times the setting current and upwards is ±20% and
thus in accordance with DIN VDE 0165.
The tripping characteristics for the instantaneous, electro-
magnetic overcurrent releases (short-circuit releases or “n”
releases) are based on the rated current I n , which is also the
maximum value of the setting range for circuit-breakers with
adjustable overload releases. If the current is set to a lower
value, the tripping current of the “n” release is increased by
a corresponding factor.
The characteristics of the electromagnetic overcurrent
releases apply to frequencies of 50/60 Hz. Appropriate
correction factors must be used for lower frequencies up to
16-2/3 Hz, for higher frequencies up to 400 Hz and for DC.
Time/current characteristics, current limiting characteristics
and I
CA08102001E
2
t characteristics are available on request.
2
t characteristics were determined in accor-
For more information visit: www.eaton.com
IEC Contactors & Starters
XT IEC Power Control
Manual Motor Protectors
Figure 34-106. MMP Tripping Characteristics — XTPB, XTPR Frame B
and XTPT (not for XTPM)
Figure 34-107. MMP Tripping Characteristics — XTPR Frame D
200
200
2h
20
10
50
2h
20
10
50
20
10
40
20
20
10
40
20
5
2
1
5
2
1
5
2
5
2
1
5
2
1
5
2
1.5 2
1.5 2
x Rated Operational Current
x Rated Operational Current
3
3
4
4
XTPB, XTPR Frame B
6
6
8 10
8 10
XTPR Frame D
15 20
15 20
XTPT
30
30
34-145
34