Eaton Motor-Protective Circuit Breaker 40-50A

Eaton PKZM4-50 PKZM4 motor-protective breaker, 40-50A, for motors up to 22kW @ 400V. Class 10A tripping with adjustable magnetic. Installed as the primary motor branch-circuit protection device between the incoming feeder and the contactor.

Standard

IEC/EN 60947-4-1

Temperature range

-25 to +55 °C

IP rating

IP20

Approval

CE, UL, cUL, CCC, UKCA

Approvals

CE, UL

Dimensions

130 x 55 x 125 mm

Weight

0.88 kg

HS code

8536.20

Eaton catalogue number

222355

Type designation

PKZM4-50

EAN / GTIN

4015082223557

Depth

160 mm

Height

140 mm

Width

55 mm

Certifications

UL Category Control No.: NLRV; IEC/EN 60947-4-1; CSA; IEC/EN 60947; CE; CSA Class No.: 3211-05; CSA File No.: 165628; VDE 0660; CSA-C22.2 No. 60947-4-1-14; UL 60947-4-1; UL; UL File No.: E36332

Altitude

Max. 2000 m

Ambient operating temperature - max

55 °C

Ambient storage temperature - max

80 °C

Ambient operating temperature - min

-25 °C

Ambient operating temperature (enclosed) - max

40 °C

Ambient operating temperature (enclosed) - min

-25 °C

Ambient storage temperature - min

-40 °C

Climatic proofing

Damp heat, cyclic, to IEC 60068-2-30; Damp heat, constant, to IEC 60068-2-78

Rated operational current for specified heat dissipation (In)

50 A

Static heat dissipation, non-current-dependent Pvs

0 W

Equipment heat dissipation, current-dependent Pvid

24.6 W

Heat dissipation capacity Pdiss

0 W

Heat dissipation per pole, current-dependent Pvid

8.2 W

Rated frequency - max

60 Hz

Rated frequency - min

50 Hz

Rated operational current (Ie)

50 A

Rated operational power at AC-3e, 220/230 V, 50 Hz

14 kW

Rated operational power at AC-3e, 380/400 V, 50 Hz

25 kW

Rated operational power at AC-3e, 440 V, 50 Hz

30 kW

Rated operational power at AC-3e, 500 V, 50 Hz

30 kW

Rated operational power at AC-3e, 690 V, 50 Hz

45 kW

Rated operational voltage (Ue) - max

690 V

Rated operational voltage (Ue) - min

690 V

Rated uninterrupted current (Iu)

50 A

Actuator type

Turn button

Features

Phase-failure sensitivity (according to IEC/EN 60947-4-1, VDE 0660 Part 102)

Functions

Phase failure sensitive; Motor protection

Number of poles

Three-pole

Connection

Screw terminals

Degree of protection

Terminals: IP00; IP20

Explosion safety category for dust

ATEX dust-ex-protection, PTB 10, ATEX 3012, Ex II(2) G

Lifespan, electrical

30,000 operations (at 400V, AC-3)

Lifespan, mechanical

30,000 Operations (Main conducting paths)

Mounting position

Can be snapped on to IEC/EN 60715 top-hat rail with 7.5 or 15 mm height.

Operating frequency

40 Operations/h

Overvoltage category

III

Pollution degree

3

Product category

Motor protective circuit breaker

Protection

Finger and back-of-hand proof, Protection against direct contact when actuated from front (EN 50274)

Rated impulse withstand voltage (Uimp)

6000 V AC

Shock resistance

15 g, Mechanical, According to IEC/EN 60068-2-27, Half-sinusoidal shock 10 ms

Suitable for

Branch circuit: Manual type E if used with terminal, or suitable for group installations, (UL/CSA); Also motors with efficiency class IE3

Temperature compensation

-25 - 55 °C, Operating range; ≤ 0.25 %/K, residual error for T > 40°; -5 - 40 °C to IEC/EN 60947, VDE 0660

Assigned motor power at 230/240 V, 60 Hz, 3-phase

15 HP

Assigned motor power at 460/480 V, 60 Hz, 3-phase

30 HP

Assigned motor power at 575/600 V, 60 Hz, 3-phase

40 HP

Rated short-circuit breaking capacity Icu at 400 V AC

50 kA

Short-circuit current

60 kA DC, up to 250 V DC, Main conducting paths

Short-circuit current rating (group protection)

42 kA, 600 V High Fault, Fuse, SCCR (UL/CSA); 600 A, 600 V High Fault, max. Fuse, SCCR (UL/CSA); 42 kA, 600 V High Fault, CB, SCCR (UL/CSA); 600 A, 600 V High Fault, max. CB, SCCR (UL/CSA)

Short-circuit current rating (type E)

Accessories required BK50/3-PKZ4-E; 50 kA, 480 Y/277 V, SCCR (UL/CSA); 50 kA, 240 V, SCCR (UL/CSA)

Short-circuit release

Basic device fixed 15.5 x Iu; ± 20% tolerance; 775 A, Irm

Switching capacity

50 A (3 contacts in series), DC-5 up to 250V; 50 A, AC-3 up to 690 V

Stripping length (main cable)

14 mm

Terminal capacity (flexible with ferrule)

1 x (0.75 - 35) mm², Main cables; 2 x (0.75 - 25) mm², Main cables

Terminal capacity (solid)

1 x (0.75 - 16) mm², Main cables; 2 x (0.75 - 16) mm²

Terminal capacity (solid/stranded AWG)

14 - 2

Tightening torque

3.3 Nm, Screw terminals, Main cable

Overload release current setting - max

50 A

Overload release current setting - min

40 A

Tripping characteristic

Overload trigger: tripping class 10 A

Standard

IEC/EN 60947-4-1

Temperature Range

-25 to +55 °C

IP Rating

IP20

Classification / Approval

CE, UL, cUL, CCC, UKCA

HS Code

8536.20