PKZM0-4-T
088914 PKZM0-4-T
88914

Transformer-protective circuit-breaker, 3p, Ir=2.5-4A, screw connection
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

Product range	PKZM0...T transformer-protective circuit-breakers up to 25 A
Basic function	Transformer protection
Notes
Connection technique	Also suitable for motors with efficiency class IE3. IE3-ready devices are identified by the logo on their packaging.
Contact sequence	Screw terminals
Rated uninterrupted current [Iu]
Overload releases [Ir ]	4 A
short-circuit release [Irm ] >max. [Irm ]
Phase-failure sensitivity	2.5 - 4 A
Notes	84 A
Standards	IEC/EN 60947-4-1, VDE 0660 Part 102
Climatic proofing	For the protection of transformers with a high inrush current. Can be snapped on to IEC/EN 60715 top-hat rail with 7.5 or 15 mm height.
Ambient temperature >Storage
Ambient temperature >Open	IEC/EN 60947, VDE 0660
Ambient temperature >Enclosed	Damp heat, constant, to IEC 60068-2-78 Damp heat, cyclic, to IEC 60068-2-30
Mounting position	- 40 - 80 °C
Direction of incoming supply	-25 - +55 °C
Degree of protection >Device	- 25 - 40 °C
Degree of protection >Terminations
Protection against direct contact when actuated from front (EN 50274)	as required
Mechanical shock resistance half-sinusoidal shock 10 ms to IEC 60068-2-27	IP20
Altitude	IP00
Terminal capacity main cable >Screw terminals >Solid	Finger and back-of-hand proof
Terminal capacity main cable >Screw terminals >Flexible with ferrule to DIN 46228	25 g
Terminal capacity main cable >Screw terminals >Solid or stranded	Max. 2000 m
Terminal capacity main cable >Screw terminals >Stripping length	1 x (1 - 6) 2 x (1 - 6) mm2
Specified tightening torque for terminal screws >Main cable	1 x (1 - 6) 2 x (1 - 6) mm2
Specified tightening torque for terminal screws >Control circuit cables	18 - 10 AWG
Rated impulse withstand voltage [Uimp]	10 mm
Overvoltage category/pollution degree	1.7 Nm
Rated operational voltage [Ue ]	1 Nm
Rated uninterrupted current = rated operational current [Iu = Ie ]
Rated frequency [f]	6000 V AC
Current heat loss (3 pole at operating temperature)	III/3
Lifespan, mechanical [Operations]	690 V AC
Lifespan, electrical (AC-3 at 400 V) >Lifespan, electrical [Operations]	4 A
Max. operating frequency	40 - 60 Hz
Short-circuit rating >DC >Short-circuit rating	4.88 W
Motor switching capacity >AC-3 (up to 690V)	0.1 x 106
Motor switching capacity >DC-5 (up to 250V)	0.1 x 106
Temperature compensation >to IEC/EN 60947, VDE 0660	40 Ops/h
Temperature compensation >Operating range	60 kA
Temperature compensation residual error for T > 40 °C	4 A
Setting range of overload releases	4 (3 contacts in series) A
short-circuit release
Short-circuit release tolerance	- 5…40 °C
Phase-failure sensitivity	- 25…55 °C
Rated operational current for specified heat dissipation [In]	≦ 0.25 %/K
Heat dissipation per pole, current-dependent [Pvid]	0.6 - 1 x Iu
Equipment heat dissipation, current-dependent [Pvid]	Basic device, fixed: 20 x Iu
Static heat dissipation, non-current-dependent [Pvs]	± 20%
Heat dissipation capacity [Pdiss]	IEC/EN 60947-4-1, VDE 0660 Part 102
Operating ambient temperature min.
Operating ambient temperature max.	4 A
10.2 Strength of materials and parts >10.2.2 Corrosion resistance	1.63 W
10.2 Strength of materials and parts >10.2.3.1 Verification of thermal stability of enclosures	4.88 W
10.2 Strength of materials and parts >10.2.3.2 Verification of resistance of insulating materials to normal heat	0 W
10.2 Strength of materials and parts >10.2.3.3 Verification of resistance of insulating materials to abnormal heat and fire due to internal electric effects	0 W
10.2 Strength of materials and parts >10.2.4 Resistance to ultra-violet (UV) radiation	-25 °C
10.2 Strength of materials and parts >10.2.5 Lifting	+55 °C
10.2 Strength of materials and parts >10.2.6 Mechanical impact
10.2 Strength of materials and parts >10.2.7 Inscriptions	Meets the product standard´s requirements.
10.3 Degree of protection of ASSEMBLIES	Meets the product standard´s requirements.
10.4 Clearances and creepage distances	Meets the product standard´s requirements.
10.5 Protection against electric shock	Meets the product standard´s requirements.
10.6 Incorporation of switching devices and components	Meets the product standard´s requirements.
10.7 Internal electrical circuits and connections	Does not apply, since the entire switchgear needs to be evaluated.
10.8 Connections for external conductors	Does not apply, since the entire switchgear needs to be evaluated.
10.9 Insulation properties >10.9.2 Power-frequency electric strength	Meets the product standard´s requirements.
10.9 Insulation properties >10.9.3 Impulse withstand voltage	Does not apply, since the entire switchgear needs to be evaluated.
10.9 Insulation properties >10.9.4 Testing of enclosures made of insulating material	Meets the product standard´s requirements.
10.10 Temperature rise	Does not apply, since the entire switchgear needs to be evaluated.
10.11 Short-circuit rating	Does not apply, since the entire switchgear needs to be evaluated.
10.12 Electromagnetic compatibility	Is the panel builder´s responsibility.
10.13 Mechanical function	Is the panel builder´s responsibility.
Rated permanent current Iu	Is the panel builder´s responsibility.
Rated voltage	Is the panel builder´s responsibility.
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz	Is the panel builder´s responsibility.
Overload release current setting	The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices.
Adjustment range short-term delayed short-circuit release	Is the panel builder´s responsibility. The specifications for the switchgear must be observed.
Adjustment range undelayed short-circuit release	Is the panel builder´s responsibility. The specifications for the switchgear must be observed.
Integrated earth fault protection	The device meets the requirements, provided the information in the instruction leaflet (IL) is observed.
Type of electrical connection of main circuit
Device construction
Suitable for DIN rail (top hat rail) mounting	4 A
DIN rail (top hat rail) mounting optional	690 - 690 V
Number of auxiliary contacts as normally closed contact	150 kA
Number of auxiliary contacts as normally open contact	4 - 4 A
Number of auxiliary contacts as change-over contact	0 - 0 A
With switched-off indicator	84 - 84 A
With under voltage release	No
Number of poles	Screw connection
Position of connection for main current circuit	Other
Type of control element	Yes
Complete device with protection unit	Yes
Motor drive integrated	0
Motor drive optional	0
Degree of protection (IP)	0
Specially designed for North America	Yes
Accessories	No
Characteristic curve	3
Characteristic curve	Other
Characteristic curve	Turn button

As Mnelko, we are a reliable partner in industrial automation solutions, offering high-quality and innovative products with a wide product range to meet all the needs of your business. Our product portfolio consists of solutions designed based on the principles of high performance, durability, and efficiency to support modern industrial processes.
All of our products ensure maximum reliability even in challenging working conditions and help your business operations run smoothly. The products we offer in industrial automation, energy management, cabling solutions, and many other areas adapt flexibly to the needs of different sectors.
Additionally, our products are manufactured using only high-quality materials and comply with international standards. Through the solutions we provide, we enable our customers to increase operational efficiency and optimize costs. Our company closely follows technological advancements and continuously offers innovative products to help our customers gain a competitive advantage.
On each of our product pages, you can find comprehensive information about technical details, areas of use, and product features. You can explore all the products you need to strengthen your industrial processes on our website and enjoy a seamless purchasing experience.