Description

EATON PKZM4-50 EA

EATON PKZM4-50 EA

Motor-protective circuit-breaker, Ir= 40 – 50 A, Screw terminals, Terminations: IP00 .

General

Mounting position

Specified tightening torque for terminal screwsMain cable

3.3 Nm

Product range

PKZM4 motor protective circuit-breakers up to 65 A

Basic function

Motor protection

Notes

Also suitable for motors with efficiency class IE3.

Connection technique

Screw terminals

Max. motor rating

AC-3220 V 230 V 240 V [P]

14 kW

AC-3380 V 400 V 415 V [P]

25 kW

AC-3440 V [P]

30 kW

AC-3500 V [P]

30 kW

AC-3660 V 690 V [P]

45 kW

Rated uninterrupted current [I_u]

50 A

Setting range

Overload releases [I_r ]

40 – 50 A

short-circuit release [I_rm ]max. [I_rm ]

775 A

Phase-failure sensitivity

IEC/EN 60947-4-1, VDE 0660 Part 102

Notes

Overload trigger: tripping class 10 A
Can be snapped on to IEC/EN 60715 top-hat rail with 7.5 or 15 mm height.

TECHNICAL DATA

General

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

15 g

Altitude

Max. 2000 m

Terminal capacity main cableScrew terminalsSolid

1 x (0.75 – 16)
2 x (0.75 – 16) mm²

Terminal capacity main cableScrew terminalsFlexible with ferrule to DIN 46228

1 x (0.75 – 35)
2 x (0.75 – 25) mm²

Terminal capacity main cableScrew terminalsSolid or stranded

14 – 1 AWG

Terminal capacity main cableScrew terminalsStripping length

14 mm

Specified tightening torque for terminal screwsMain cable

3.3 Nm

Main conducting paths

Rated impulse withstand voltage [U_imp]

6000 V AC

Overvoltage category/pollution degree

III/3

Rated operational voltage [U_e ]

690 V AC

Rated uninterrupted current = rated operational current [I_u = I_e ]

50 A

Rated frequency [f]

50/60 Hz

Current heat loss (3 pole at operating temperature)

24.6 W

Impedance per pole

3 mΩ

Lifespan, mechanical [Operations]

0.03 x 10⁶

Lifespan, electrical (AC-3 at 400 V)Lifespan, electrical [Operations]

0.03 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)

50 A

Motor switching capacityDC-5 (up to 250V)

50 (3 contacts in series) A

Trip blocks

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 I_u

short-circuit release

Basic device, fixed: 15.5 x I_u

Short-circuit release tolerance

± 20%

Phase-failure sensitivity

IEC/EN 60947-4-1, VDE 0660 Part 102

EATON PKZM4-50 EA