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PKZM0-25-T 278493 Y7-278493 EATON ELECTRIC Motor-protective circuit-breaker, 3p, Ir 20-25A
PKZM0-25-T
278493
Y7-278493
EATON - MOELLER
1 Pcs.
Motor-protective circuit-breaker, 3p, Ir=20-25A
PKZM0-25-T
Eaton Moeller® series PKZM0 Motor-protective circuit-breaker, 3p, Ir=20-25A
Transformer circuit-breaker according to IEC/EN60947, 3 pole size PKZM0, with adjustable overload and non-delayed short-circuit release, phase failure sensitive, screw and snap fitting, with screw terminal, cap installation dimension 45mm, rated operating voltage Ue 690V, degree of protection IP20, finger proof according to VDE 0106 T. 100, accessories: auxiliary contact, voltage release
Automation > Power circuit-breaker for trafo/generator/installation protection
Circuit Breakers PKZ
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A PKZM0-25-T 278493 Y7-278493 EATON ELECTRIC Motor-protective circuit-breaker, 3p, Ir 20-25A is a specialized circuit breaker designed specifically to protect electric motors from overloads, phase failures, and short circuits in industrial automation setups.
Pricing, availability and lead time are confirmed per enquiry through an RFQ.
- Rated permanent current Iu (EF001389): 25 A
- Rated voltage (EF003977): 690 V
- Overload release current setting (EF002336): 20 A
- Adjustment range undelayed short-circuit release (EF007131): 420 A
- Power loss (EF005387): 6.83 W
- Device construction (EF008240): Built-in device fixed built-in technique
- Integrated earth fault protection (EF007296): false
- Type of electrical connection of main circuit (EF006819): Screw connection
- Suitable for DIN rail (top hat rail) mounting (EF007250): true
- DIN rail (top hat rail) mounting optional (EF008904): true
- With switched-off indicator (EF007006): true
- With integrated under voltage release (EF001390): false
- Number of poles (EF001391): 3
- Type of control element (EF006976): Turn button
- Complete device with protection unit (EF008906): true
- Motor drive integrated (EF006697): false
More info
▲General specifications
Product Name
Eaton Moeller® series PKZM0 Transformer-protective circuit-breaker
Catalog Number
278493
Model Code
PKZM0-25-T
EAN
4015082784935
Product Length/Depth
76 mm
Product Height
93 mm
Product Width
45 mm
Product Weight
0.291 kg
Certifications
IEC/EN 60947
VDE 0660
VDE 0660
Features & Functions
Actuator type
Turn button
Features
Phase-failure sensitivity (according to IEC/EN 60947-4-1, VDE 0660 Part 102)
Fitted with:
Switched-off indicator
Functions
For the protection of transformers with a high inrush current
Transformer protection
Transformer protection
Number of poles
Three-pole
General
Connection
Screw terminals
Lifespan, electrical
100,000 operations (at 400V, AC-3)
Lifespan, mechanical
100,000 Operations (Main conducting paths)
Mounting Method
DIN rail (top hat rail) mounting optional
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
Transformer 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
25 g, Mechanical, according to IEC/EN 60068-2-27, Half-sinusoidal shock 10 ms
Suitable for
Also motors with efficiency class IE3
DIN rail (top hat rail) mounting
DIN rail (top hat rail) mounting
Temperature compensation
-25 - 55 °C, Operating range
≤ 0.25 %/K, residual error for T > 40°
-5 - 40 °C to IEC/EN 60947, VDE 0660
≤ 0.25 %/K, residual error for T > 40°
-5 - 40 °C to IEC/EN 60947, VDE 0660
Climatic environmental conditions
Altitude
Max. 2000 m
Ambient operating temperature - min
-25 °C
Ambient operating temperature - max
55 °C
Ambient operating temperature (enclosed) - min
-25 °C
Ambient operating temperature (enclosed) - max
40 °C
Ambient storage temperature - min
-40 °C
Ambient storage temperature - max
80 °C
Climatic proofing
Damp heat, constant, to IEC 60068-2-78
Damp heat, cyclic, to IEC 60068-2-30
Damp heat, cyclic, to IEC 60068-2-30
Terminal capacities
Terminal capacity (solid)
2 x (1 - 6) mm²
1 x (1 - 6) mm²
1 x (1 - 6) mm²
Terminal capacity (solid/stranded AWG)
18 - 10
Stripping length (main cable)
10 mm
Tightening torque
1 Nm, Screw terminals, Control circuit cables
1.7 Nm, Screw terminals, Main cable
1.7 Nm, Screw terminals, Main cable
Electrical rating
Rated frequency - min
50 Hz
Rated frequency - max
60 Hz
Rated operational current (Ie)
25 A
Rated operational power at AC-3, 220/230 V, 50 Hz
5.5 kW
Rated operational power at AC-3, 380/400 V, 50 Hz
12.5 kW
Rated operational voltage (Ue) - min
690 V
Rated operational voltage (Ue) - max
690 V
Rated uninterrupted current (Iu)
25 A
Short-circuit rating
Short-circuit current
40 kA DC, up to 250 V DC, Main conducting paths
Short-circuit current rating (group protection)
10 kA, 600 V High Fault, Fuse, SCCR (UL/CSA) with 150 A, 600 V High Fault, Fuse, SCCR (UL/CSA)
10 kA, 600 V High Fault, CB, SCCR (UL/CSA) with 125 A, 600 V High Fault, CB, SCCR (UL/CSA)
18 kA, 600 V High Fault, Fuse with CL, SCCR (UL/CSA) with 600 A, 600 V High Fault, Fuse with CL, SCCR (UL/CSA)
18 kA, 600 V High Fault, CB with CL, SCCR (UL/CSA) with 600 A, 600 V High Fault, CB with CL, SCCR (UL/CSA)
18 kA, 480 V High Fault, CB, SCCR (UL/CSA) with 600 A, 480 V High Fault, CB, SCCR (UL/CSA)
18 kA, 480 V High Fault, Fuse, SCCR (UL/CSA) with 600 A, 480 V High Fault, Fuse, SCCR (UL/CSA)
10 kA, 600 V High Fault, CB, SCCR (UL/CSA) with 125 A, 600 V High Fault, CB, SCCR (UL/CSA)
18 kA, 600 V High Fault, Fuse with CL, SCCR (UL/CSA) with 600 A, 600 V High Fault, Fuse with CL, SCCR (UL/CSA)
18 kA, 600 V High Fault, CB with CL, SCCR (UL/CSA) with 600 A, 600 V High Fault, CB with CL, SCCR (UL/CSA)
18 kA, 480 V High Fault, CB, SCCR (UL/CSA) with 600 A, 480 V High Fault, CB, SCCR (UL/CSA)
18 kA, 480 V High Fault, Fuse, SCCR (UL/CSA) with 600 A, 480 V High Fault, Fuse, SCCR (UL/CSA)
Short-circuit release
± 20% tolerance, Trip blocks
Basic device, fixed 20 x Iu, Trip Blocks
437 A, Irm, Setting range max.
Basic device, fixed 20 x Iu, Trip Blocks
437 A, Irm, Setting range max.
Rated short-circuit breaking capacity Ics at 400 V AC
38 kA
Rated short-circuit breaking capacity Icu at 400 V AC
50 kA
Rated short-circuit breaking capacity Icu at 440 V AC
10 kA
Rated short-circuit breaking capacity Ics at 440 V AC
3 kA
Rated short-circuit breaking capacity Icu at 500 V AC
3 kA
Rated short-circuit breaking capacity Ics at 500 V AC
3 kA
Rated short-circuit breaking capacity Icu at 690 V AC
3 kA
Rated short-circuit breaking capacity Ics at 690 V AC
1 kA
Contacts
Number of auxiliary contacts (change-over contacts)
0
Number of auxiliary contacts (normally closed contacts)
0
Number of auxiliary contacts (normally open contacts)
0
Trip blocks
Overload release current setting - min
20 A
Overload release current setting - max
25 A
Design verification
Equipment heat dissipation, current-dependent Pvid
6.83 W
Heat dissipation capacity Pdiss
0 W
Heat dissipation per pole, current-dependent Pvid
2.28 W
Rated operational current for specified heat dissipation (In)
25 A
Static heat dissipation, non-current-dependent Pvs
0 W
10.2.2 Corrosion resistance
Meets the product standard's requirements.
10.2.3.1 Verification of thermal stability of enclosures
Meets the product standard's requirements.
10.2.3.2 Verification of resistance of insulating materials to normal heat
Meets the product standard's requirements.
10.2.3.3 Resist. of insul. mat. to abnormal heat/fire by internal elect. effects
Meets the product standard's requirements.
10.2.4 Resistance to ultra-violet (UV) radiation
Meets the product standard's requirements.
10.2.5 Lifting
Does not apply, since the entire switchgear needs to be evaluated.
10.2.6 Mechanical impact
Does not apply, since the entire switchgear needs to be evaluated.
10.2.7 Inscriptions
Meets the product standard's requirements.
10.3 Degree of protection of assemblies
Does not apply, since the entire switchgear needs to be evaluated.
10.4 Clearances and creepage distances
Meets the product standard's requirements.
10.5 Protection against electric shock
Does not apply, since the entire switchgear needs to be evaluated.
10.6 Incorporation of switching devices and components
Does not apply, since the entire switchgear needs to be evaluated.
10.7 Internal electrical circuits and connections
Is the panel builder's responsibility.
10.8 Connections for external conductors
Is the panel builder's responsibility.
10.9.2 Power-frequency electric strength
Is the panel builder's responsibility.
10.9.3 Impulse withstand voltage
Is the panel builder's responsibility.
10.9.4 Testing of enclosures made of insulating material
Is the panel builder's responsibility.
10.10 Temperature rise
The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices.
10.11 Short-circuit rating
Is the panel builder's responsibility. The specifications for the switchgear must be observed.
10.12 Electromagnetic compatibility
Is the panel builder's responsibility. The specifications for the switchgear must be observed.
10.13 Mechanical function
The device meets the requirements, provided the information in the instruction leaflet (IL) is observed.