Standards
IEC/EN 60947, VDE 0660,UL, CSA
Climatic proofing
Damp heat, constant, to IEC 60068-2-78
Damp heat, cyclic, to IEC 60068-2-30
Ambient temperatureStorage
– 40 – 80 °C
Ambient temperatureOpen
-25 – +55 °C
Ambient temperatureEnclosed
– 25 – 40 °C
Direction of incoming supply
as required
Degree of protectionDevice
IP20
Degree of protectionTerminations
IP00
Protection against direct contact when actuated from front (EN 50274)
Finger and back-of-hand proof
Mechanical shock resistance half-sinusoidal shock 10 ms to IEC 60068-2-27
25 g
Terminal capacity main cableScrew terminalsSolid
1 x (1 – 6)
2 x (1 – 6) mm2
Terminal capacity main cableScrew terminalsFlexible with ferrule to DIN 46228
1 x (1 – 6)
2 x (1 – 6) mm2
Terminal capacity main cableScrew terminalsSolid or stranded
18 – 10 AWG
Terminal capacity main cableScrew terminalsStripping length
10 mm
Specified tightening torque for terminal screwsMain cable
1.7 Nm
Specified tightening torque for terminal screwsControl circuit cables
1 Nm
Rated impulse withstand voltage [Uimp]
6000 V AC
Overvoltage category/pollution degree
III/3
Rated operational voltage [Ue ]
690 V AC
Rated uninterrupted current = rated operational current [Iu = Ie ]
1 A
Rated frequency [f]
50/60 Hz
Current heat loss (3 pole at operating temperature)
5.33 W
Impedance per pole
1700 mΩ
Lifespan, mechanical [Operations]
0.1 x 106
Lifespan, electrical (AC-3 at 400 V)Lifespan, electrical [Operations]
0.1 x 106
Max. operating frequency
40 Ops/h
Short-circuit ratingDCShort-circuit rating
60 kA
Short-circuit ratingDCNotes
up to 250 V
Motor switching capacityAC-3 (up to 690V)
1 A
Motor switching capacityDC-5 (up to 250V)
1 (3 contacts in series) A
Temperature compensationto IEC/EN 60947, VDE 0660
– 5…40 °C
Temperature compensationOperating range
– 25…55 °C
Temperature compensation residual error for T > 40 °C
≦ 0.25 %/K
Setting range of overload releases
0.6 – 1 x Iu
short-circuit release
Basic device, fixed: 15.5 x Iu
Short-circuit release tolerance
± 20%
Phase-failure sensitivity
IEC/EN 60947-4-1, VDE 0660 Part 102
Rating data for approved types
Switching capacityMaximum motor ratingThree-phase200 V
208 V
Hinweis: Motorleistung in diesem Bereich nach Bemessungsstrom berechnen. Angegebene Werte nach NEC Table 430-150 HP
Switching capacityMaximum motor ratingThree-phase230 V
240 V
Hinweis: Motorleistung in diesem Bereich nach Bemessungsstrom berechnen. Angegebene Werte nach NEC Table 430-150 HP
Switching capacityMaximum motor ratingThree-phase460 V
480 V
Hinweis: Motorleistung in diesem Bereich nach Bemessungsstrom berechnen. Angegebene Werte nach NEC Table 430-150 HP
Switching capacityMaximum motor ratingThree-phase575 V
600 V
Hinweis: Motorleistung in diesem Bereich nach Bemessungsstrom berechnen. Angegebene Werte nach NEC Table 430-150 HP
Short Circuit Current Rating, type E240 V
65 kA
Short Circuit Current Rating, type E480 Y / 277 V
65 kA
Short Circuit Current Rating, type E600 Y / 347 V
50 kA
Short Circuit Current Rating, type EAccessories required
BK25/3-PKZ0-E
Short Circuit Current Rating, group protection600 V High FaultSCCR (fuse)
50 kA
Short Circuit Current Rating, group protection600 V High Faultmax. Fuse
600 A
Short Circuit Current Rating, group protection600 V High FaultSCCR (CB)
50 kA
Short Circuit Current Rating, group protection600 V High Faultmax. CB
600 A
[Ir ]
[Irm ]max. [Irm ]
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