Eaton Moeller® series PKZM4 Motor-protective circuit-breaker, Ir= 40 – 50 A, Screw terminals, Terminations: IP00 PKZM4-50


General specifications Product Name Eaton Moeller® series PKZM4 Motor-protective circuit-breaker
Catalog Number 222355
Model Code PKZM4-50
EAN 4015082223557
Product Length/Depth 160 mm
Product Height 140 mm
Product Width 55 mm
Product Weight 1.136 kg
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
Product specifications Rated operational current for specified heat dissipation (In) 50 A
Terminal capacity (flexible with ferrule) 1 x (0.75 – 35) mm², Main cables 2 x (0.75 – 25) mm², Main cables
10.11 Short-circuit rating Is the panel builder’s responsibility. The specifications for the switchgear must be observed.
Ambient operating temperature (enclosed) – min 25 °C
Rated operational power at AC-3, 380/400 V, 50 Hz 25 kW
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)
10.4 Clearances and creepage distances Meets the product standard’s requirements.
10.12 Electromagnetic compatibility
10.2.5 Lifting Does not apply, since the entire switchgear needs to be evaluated.
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
Ambient operating temperature (enclosed) – max 40 °C Verification of thermal stability of enclosures
Ambient storage temperature – min
Adjustment range undelayed short-circuit release – max 775 A
10.8 Connections for external conductors Is the panel builder’s responsibility.
Rated short-circuit breaking capacity at 400 V AC 50 kA
Assigned motor power at 575/600 V, 60 Hz, 3-phase 40 HP
Protection Finger and back-of-hand proof, Protection against direct contact when actuated from front (EN 50274)
Actuator type Turn button
Rated operational power at AC-3, 440 V, 50 Hz 30 kW
Ambient operating temperature – max 55 °C
Rated operational power at AC-3, 220/230 V, 50 Hz 14 kW
Climatic proofing Damp heat, cyclic, to IEC 60068-2-30 Damp heat, constant, to IEC 60068-2-78
Device construction Built-in device fixed built-in technique
Features Phase-failure sensitivity (according to IEC/EN 60947-4-1, VDE 0660 Part 102)
Lifespan, electrical 30,000 operations (at 400V, AC-3)
Static heat dissipation, non-current-dependent Pvs 0 W
Electrical connection type of main circuit Screw connection
10.9.3 Impulse withstand voltage
Number of poles Three-pole
Ambient operating temperature – min -25 °C
10.6 Incorporation of switching devices and components
10.5 Protection against electric shock
Mounting position Can be snapped on to IEC/EN 60715 top-hat rail with 7.5 or 15 mm height.
Rated uninterrupted current (Iu)
Tripping characteristic Overload trigger: tripping class 10 A
Short-circuit release ± 20% tolerance, Trip blocks 775 A, Irm, Setting range max. Basic device fixed 15.5 x Iu, Trip Blocks
10.13 Mechanical function The device meets the requirements, provided the information in the instruction leaflet (IL) is observed.
10.2.6 Mechanical impact
10.9.4 Testing of enclosures made of insulating material
10.3 Degree of protection of assemblies
Heat dissipation per pole, current-dependent Pvid 8.2 W
Operating frequency 40 Operations/h
Product category Motor protective circuit breaker
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)
Overload release current setting – min 40 A
Rated operational power at AC-3, 690 V, 50 Hz 45 kW
Equipment heat dissipation, current-dependent Pvid 24.6 W
Heat dissipation capacity Pdiss
Rated operational current (Ie)
Assigned motor power at 460/480 V, 60 Hz, 3-phase 30 HP
Suitable for Branch circuit: Manual type E if used with terminal, or suitable for group installations, (UL/CSA) Also motors with efficiency class IE3
Internal resistance 3 mΩ
Temperature compensation -25 – 55 °C, Operating range ≤ 0.25 %/K, residual error for T > 40° -5 – 40 °C to IEC/EN 60947, VDE 0660
Terminal capacity (solid) 1 x (0.75 – 16) mm², Main cables 2 x (0.75 – 16) mm²
Rated frequency – min 50 Hz
Short-circuit current 60 kA DC, up to 250 V DC, Main conducting paths Verification of resistance of insulating materials to normal heat Resist. of insul. mat. to abnormal heat/fire by internal elect. effects
Lifespan, mechanical 30,000 Operations (Main conducting paths)
Terminal capacity (solid/stranded AWG) 14 – 2
Overload release current setting – max
10.9.2 Power-frequency electric strength
Overvoltage category III
Degree of protection Terminals: IP00 IP20
Rated frequency – max 60 Hz
Switch off technique Thermomagnetic
Ambient storage temperature – max 80 °C
Adjustment range undelayed short-circuit release – min
Pollution degree 3
10.7 Internal electrical circuits and connections
Rated impulse withstand voltage (Uimp) 6000 V AC
Connection Screw terminals
10.10 Temperature rise The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices.
Functions Phase failure sensitive Motor protection
Tightening torque 3.3 Nm, Screw terminals, Main cable
Rated operational voltage (Ue) – min 690 V
Explosion safety category for dust ATEX dust-ex-protection, PTB 10, ATEX 3012, Ex II(2) G
10.2.2 Corrosion resistance
10.2.4 Resistance to ultra-violet (UV) radiation
10.2.7 Inscriptions
Rated operational power at AC-3, 500 V, 50 Hz
Shock resistance 15 g, Mechanical, According to IEC/EN 60068-2-27, Half-sinusoidal shock 10 ms
Rated operational voltage (Ue) – max
Assigned motor power at 230/240 V, 60 Hz, 3-phase 15 HP
Altitude Max. 2000 m
Brochures  Motor Starters in System xStart – brochure
 Save time and space thanks to the new link module PKZM0-XDM32ME
Catalogs  Switching and protecting motors – catalog
 Product Range Catalog Switching and protecting motors
 Product overview for machinery
Certification reports  DA-DC-00004228.pdf
Characteristic curve  eaton-manual-motor-starters-characteristic-pkzm4-characteristic-curve.eps
Drawings  121X073
eCAD model  ETN.PKZM4-50
Installation instructions  eaton-motors-starters-pkzm4-motor-protective-circuit-breaker-instruction-leaflet-il03407012z.pdf
mCAD model  DA-CD-pkzm4
Specifications and datasheets  Eaton Specification Sheet – 222355
User guides  MN03402002Z_DE_EN
Wiring diagrams  eaton-manual-motor-starters-transformer-pkzm0-wiring-diagram.eps
Date Thu Jul 20 2023