PKZ-SOL20
120938 PKZ-SOL20
120938

String circuit-breaker, DC current, 2p, 20A
String circuit-breakers PKZ-SOL are the fuseless alternative for the protection of photovoltaic modules against short-circuit currents. With their variable tripping range, they can be optimally adjusted to the actual short-circuit current of a string. Using the optional delayed undervoltage release P-SOL-XUV, remote switching, for example, for the fire brigade is possible.

Product range	Switchgear for photovoltaic systems
Subrange	String circuit-breakers
Product range	String circuit-breakers
Application field	Utility buildings Open areas
Rated operational voltage [Ue]	900 V
Protection class	2
Number of conductors	2 pole
Rated operational current at DC-21A [Ie]	20 A
Admissible short-circuit current for solar modules [ISC]	9 - 15 A
Overload releases [Ir ] >Overload release, min. [Ir]
Overload releases [Ir ] >Overload release max.	16 A
Connection technique	20 A
Design	Screw terminals
Notes	open
Rated operational current at DC-21A [Ie]	Accessories Page 2 auxiliary contacts NHI-E ￫ 082882 3 shunt releases A-PKZ0 ￫ 073187 3 undervoltage releases U-PKZ0 ￫ 073135
Number of poles	20 A
Rated operational voltage [Ue]	2 pole
Thermal trip	900 V
Electromagnetic trip block	1.05 - 1.3 x Ie
Standards	6 x Ie
Climatic proofing	IEC/EN 60947‐2 TÜV-certified
Open	Damp heat, constant, to IEC 60068-2-78 Damp heat, cyclic, to IEC 60068-2-30
Mounting position
Width	-25 - +60 °C
Height
Depth
Top-hat rail	58 mm
Weight	93 mm
Flexible with ferrule	76 mm
Solid or stranded	35 mm
Internal resistance	0.32 kg
Rated operational current for specified heat dissipation [In]
Heat dissipation per pole, current-dependent [Pvid]	1 x (1 - 6) 2 x (1 - 6) mm2
Equipment heat dissipation, current-dependent [Pvid]	18 - 14 AWG
Static heat dissipation, non-current-dependent [Pvs]	12 mΩ
Heat dissipation capacity [Pdiss]
Operating ambient temperature min.	20 A
Operating ambient temperature max.	1.6 W
10.2 Strength of materials and parts >10.2.2 Corrosion resistance	4.8 W
10.2 Strength of materials and parts >10.2.3.1 Verification of thermal stability of enclosures	0 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	-25 °C
10.2 Strength of materials and parts >10.2.4 Resistance to ultra-violet (UV) radiation	+60 °C
10.2 Strength of materials and parts >10.2.5 Lifting
10.2 Strength of materials and parts >10.2.6 Mechanical impact	Meets the product standard´s requirements.
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	Does not apply, since the entire switchgear needs to be evaluated.
10.7 Internal electrical circuits and connections	Does not apply, since the entire switchgear needs to be evaluated.
10.8 Connections for external conductors	Meets the product standard´s requirements.
10.9 Insulation properties >10.9.2 Power-frequency electric strength	Does not apply, since the entire switchgear needs to be evaluated.
10.9 Insulation properties >10.9.3 Impulse withstand voltage	Meets the product standard´s requirements.
10.9 Insulation properties >10.9.4 Testing of enclosures made of insulating material	Does not apply, since the entire switchgear needs to be evaluated.
10.10 Temperature rise	Does not apply, since the entire switchgear needs to be evaluated.
10.11 Short-circuit rating	Is the panel builder´s responsibility.
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	The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices.
Overload release current setting	Is the panel builder´s responsibility. The specifications for the switchgear must be observed.
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	The device meets the requirements, provided the information in the instruction leaflet (IL) is observed.
Integrated earth fault protection
Type of electrical connection of main circuit
Device construction	20 A
Suitable for DIN rail (top hat rail) mounting	900 - 900 V
DIN rail (top hat rail) mounting optional	0 kA
Number of auxiliary contacts as normally closed contact	14 - 20 A
Number of auxiliary contacts as normally open contact	0 - 0 A
Number of auxiliary contacts as change-over contact	120 - 120 A
With switched-off indicator	No
With under voltage release	Screw connection
Number of poles	Built-in device fixed built-in technique
Position of connection for main current circuit	Yes
Type of control element	Yes
Complete device with protection unit	0
Motor drive integrated	0
Motor drive optional	0
Degree of protection (IP)	No
Specially designed for North America	No
Characteristic curve	2

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