T0-4-8344/I2-NA
255882 T0-4-8344/I2-NA
255882

On-Off switch, T0, 20 A, surface mounting, 4 contact unit(s), 8-pole, with black thumb grip and front plate, UL/CSA
On-Off switch, Product range: On-Off switch, Part group reference: T0, with black thumb grip and front plate, Notes: UL/CSA, 8-pole, Degree of Protection: IP65, Design: surface mounting, Switching angle: 90 °, Switching performance: maintained, front plate: 0-1, Motor rating AC-23A, 50 - 60 Hz 400 V: P = 5.5 kW, Rated uninterrupted current: Iu = 20 A, 4 contact unit(s), Standards: IEC/EN 60947, VDE 0660, IEC/EN 60204, CSA, UL, Switch-disconnector according to IEC/EN 60947-3

Product range	On-Off switch
Part group reference	T0
Notes	with black thumb grip and front plate
Number of poles	UL/CSA
Degree of Protection	8-pole
Design	IP65
Contact sequence
Switching angle	surface mounting
Switching performance
Design number
Front plate no.	90 °
front plate	maintained
400 V [P]	8344
Rated uninterrupted current [Iu]
Note on rated uninterrupted current !u	0-1
Number of contact units	5.5 kW
Standards	20 A
Climatic proofing	Rated uninterrupted current Iu is specified for max. cross-section.
Ambient temperature >Enclosed	4 contact unit(s)
Overvoltage category/pollution degree	IEC/EN 60947, VDE 0660, IEC/EN 60204, CSA, UL Switch-disconnector according to IEC/EN 60947-3
Rated impulse withstand voltage [Uimp]	Damp heat, constant, to IEC 60068-2-78 Damp heat, cyclic, to IEC 60068-2-30
Mechanical shock resistance	-25 - +40 °C
Mounting position	III/3
Mechanical variables >Number of poles	6000 V AC
Electrical characteristics >Rated operational voltage [Ue]	15 g
Electrical characteristics >Rated uninterrupted current [Iu]	As required
Electrical characteristics >Note on rated uninterrupted current !u	8-pole
Load rating with intermittent operation, class 12 >AB 25 % DF	690 V AC
Load rating with intermittent operation, class 12 >AB 40 % DF	20 A
Load rating with intermittent operation, class 12 >AB 60 % DF	Rated uninterrupted current Iu is specified for max. cross-section.
Short-circuit rating >Fuse	2 x Ie
Rated short-time withstand current (1 s current) [Icw ]	1.6 x Ie
Note on rated short-time withstand current lcw	1.3 x Ie
Rated conditional short-circuit current [Iq]	20 A gG/gL
cos ϕ rated making capacity as per IEC 60947-3	320 Arms
Rated breaking capacity cos ϕ to IEC 60947-3 >230 V	Current for a time of 1 second
Rated breaking capacity cos ϕ to IEC 60947-3 >400/415 V	6 kA
Rated breaking capacity cos ϕ to IEC 60947-3 >500 V	130 A
Rated breaking capacity cos ϕ to IEC 60947-3 >690 V	100 A
Safe isolation to EN 61140 >between the contacts	110 A
Safe isolation to EN 61140 >Current heat loss per contact at Ie	80 A
Safe isolation to EN 61140 >Current heat loss per auxiliary circuit at Ie (AC-15/230 V)	60 A
Lifespan, mechanical [Operations]	440 V AC
Maximum operating frequency [Operations/h]	0.6 W
AC >AC-3 >Rating, motor load switch [P] >220 V 230 V [P]	0.6 CO
AC >AC-3 >Rating, motor load switch [P] >230 V Star-delta [P]	> 0.4 x 106
AC >AC-3 >Rating, motor load switch [P] >400 V 415 V [P]	1200
AC >AC-3 >Rating, motor load switch [P] >400 V Star-delta [P]	3 kW
AC >AC-3 >Rating, motor load switch [P] >500 V [P]	5.5 kW
AC >AC-3 >Rating, motor load switch [P] >500 V Star-delta [P]	5.5 kW
AC >AC-3 >Rating, motor load switch [P] >690 V [P]	7.5 kW
AC >AC-3 >Rating, motor load switch [P] >690 V Star-delta [P]	5.5 kW
AC >AC-3 >Rated operational current motor load switch >230 V [Ie]	7.5 kW
AC >AC-3 >Rated operational current motor load switch >230 V star-delta [Ie]	4 kW
AC >AC-3 >Rated operational current motor load switch >400V 415 V [Ie]	5.5 kW
AC >AC-3 >Rated operational current motor load switch >400 V star-delta [Ie]	11.5 A
AC >AC-3 >Rated operational current motor load switch >500 V [Ie ]	20 A
AC >AC-3 >Rated operational current motor load switch >500 V star-delta [Ie ]	11.5 A
AC >AC-3 >Rated operational current motor load switch >690 V [Ie]	20 A
AC >AC-3 >Rated operational current motor load switch >690 V star-delta [Ie]	9 A
AC >AC-21A >Rated operational current switch >440 V [Ie]	15.6 A
AC >AC-23A >Motor rating AC-23A, 50 - 60 Hz [P] >230 V [P]	4.9 A
AC >AC-23A >Motor rating AC-23A, 50 - 60 Hz [P] >400 V 415 V [P]	8.5 A
AC >AC-23A >Motor rating AC-23A, 50 - 60 Hz [P] >500 V [P]	20 A
AC >AC-23A >Motor rating AC-23A, 50 - 60 Hz [P] >690 V [P]	3 kW
AC >AC-23A >Rated operational current motor load switch >230 V [Ie]	5.5 kW
AC >AC-23A >Rated operational current motor load switch >400 V 415 V [Ie]	7.5 kW
AC >AC-23A >Rated operational current motor load switch >500 V [Ie]	5.5 kW
AC >AC-23A >Rated operational current motor load switch >690 V [Ie]	13.3 A
DC >DC-1, Load-break switches L/R = 1 ms >Rated operational current [Ie]	13.3 A
DC >DC-1, Load-break switches L/R = 1 ms >Voltage per contact pair in series	13.3 A
DC >DC-21A [Ie ] >Rated operational current [Ie]	7.6 A
DC >DC-21A [Ie ] >Contacts	10 A
DC >DC-23A, motor load switch L/R = 15 ms >24 V >Rated operational current [Ie]	60 V
DC >DC-23A, motor load switch L/R = 15 ms >24 V >Contacts	1 A
DC >DC-23A, motor load switch L/R = 15 ms >48 V >Rated operational current [Ie]	1 Quantity
DC >DC-23A, motor load switch L/R = 15 ms >48 V >Contacts	10 A
DC >DC-23A, motor load switch L/R = 15 ms >60 V >Rated operational current [Ie]	1 Quantity
DC >DC-23A, motor load switch L/R = 15 ms >60 V >Contacts	10 A
DC >DC-23A, motor load switch L/R = 15 ms >120 V >Rated operational current [Ie]	2 Quantity
DC >DC-23A, motor load switch L/R = 15 ms >120 V >Contacts	10 A
DC >DC-23A, motor load switch L/R = 15 ms >240 V >Rated operational current [Ie]	3 Quantity
DC >DC-23A, motor load switch L/R = 15 ms >240 V >Contacts	5 A
DC >DC-13, Control switches L/R = 50 ms >Rated operational current [Ie]	3 Quantity
DC >DC-13, Control switches L/R = 50 ms >Voltage per contact pair in series	5 A
Control circuit reliability at 24 V DC, 10 mA [Fault probability]	5 Quantity
Solid or stranded	10 A
Flexible with ferrules to DIN 46228	32 V
Terminal screw	< 10 -5, < 1 fault in 100000 operations HF
Tightening torque for terminal screw	1 x (1 - 2,5) 2 x (1 - 2,5) mm2
Notes	1 x (0.75 - 2.5) 2 x (0.75 - 2.5) mm2
Contacts >Rated operational voltage [Ue]	M3.5
Contacts >Rated uninterrupted current max. >Main conducting paths >General use	1 Nm
Contacts >Rated uninterrupted current max. >Auxiliary contacts >General Use [IU]	B10d values as per EN ISO 13849-1, table C1
Contacts >Rated uninterrupted current max. >Auxiliary contacts >Pilot Duty	600 V AC
Switching capacity >Maximum motor rating >Single-phase >120 V AC	16 A
Switching capacity >Maximum motor rating >Single-phase >200 V AC	10 A
Switching capacity >Maximum motor rating >Single-phase >240 V AC	A 600 P 600
Switching capacity >Maximum motor rating >Three-phase >200 V AC	0.5 HP
Switching capacity >Maximum motor rating >Three-phase >240 V AC	1 HP
Switching capacity >Maximum motor rating >Three-phase >480 V AC	1.5 HP
Switching capacity >Maximum motor rating >Three-phase >600 V AC	3 HP
Short Circuit Current Rating >Basic Rating	3 HP
Short Circuit Current Rating >max. Fuse	7.5 HP
Short Circuit Current Rating >High fault rating	7.5 HP
Short Circuit Current Rating >max. Fuse	5 kA
Terminal capacity >Solid or flexible conductor with ferrule	50 A
Terminal capacity >Terminal screw	10 kA
Terminal capacity >Tightening torque	20, Class J A
Rated operational current for specified heat dissipation [In]	18 - 14 AWG
Heat dissipation per pole, current-dependent [Pvid]	M3.5
Equipment heat dissipation, current-dependent [Pvid]	8.8 lb-in
Static heat dissipation, non-current-dependent [Pvs]	20 A
Heat dissipation capacity [Pdiss]	0.6 W
Operating ambient temperature min.	0 W
Operating ambient temperature max.	0 W
10.2 Strength of materials and parts >10.2.2 Corrosion resistance	0 W
10.2 Strength of materials and parts >10.2.3.1 Verification of thermal stability of enclosures	-25 °C
10.2 Strength of materials and parts >10.2.3.2 Verification of resistance of insulating materials to normal heat	+40 °C
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	Meets the product standard´s requirements.
10.2 Strength of materials and parts >10.2.4 Resistance to ultra-violet (UV) radiation	Meets the product standard´s requirements.
10.2 Strength of materials and parts >10.2.5 Lifting	Meets the product standard´s requirements.
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	UV resistance only in connection with protective shield.
10.3 Degree of protection of ASSEMBLIES	Does not apply, since the entire switchgear needs to be evaluated.
10.4 Clearances and creepage distances	Does not apply, since the entire switchgear needs to be evaluated.
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	Meets the product standard´s requirements.
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	Does not apply, since the entire switchgear needs to be evaluated.
10.9 Insulation properties >10.9.3 Impulse withstand voltage	Is the panel builder´s responsibility.
10.9 Insulation properties >10.9.4 Testing of enclosures made of insulating material	Is the panel builder´s responsibility.
10.10 Temperature rise	Is the panel builder´s responsibility.
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	The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices.
Version as main switch	Is the panel builder´s responsibility. The specifications for the switchgear must be observed.
Version as maintenance-/service switch	Is the panel builder´s responsibility. The specifications for the switchgear must be observed.
Version as safety switch	The device meets the requirements, provided the information in the instruction leaflet (IL) is observed.
Version as emergency stop installation	No
Version as reversing switch	No
Number of switches	No
Max. rated operation voltage Ue AC	No
Rated operating voltage	No
Rated permanent current Iu	1
Rated permanent current at AC-23, 400 V	690 V
Rated permanent current at AC-21, 400 V	690 - 690 V
Rated operation power at AC-3, 400 V	20 A
Rated short-time withstand current lcw	13.3 A
Rated operation power at AC-23, 400 V	20 A
Switching power at 400 V	5.5 kW
Conditioned rated short-circuit current Iq	0.32 kA
Number of poles	5.5 kW
Number of auxiliary contacts as normally closed contact	5.5 kW
Number of auxiliary contacts as normally open contact	6 kA
Number of auxiliary contacts as change-over contact	8
Motor drive optional	0
Motor drive integrated	0
Voltage release optional	0
Device construction	No
Suitable for ground mounting	No
Suitable for front mounting 4-hole	No
Suitable for front mounting centre	Complete device in housing
Suitable for distribution board installation	Yes
Suitable for intermediate mounting	No
Colour control element	No
Type of control element	No
Interlockable	No
Type of electrical connection of main circuit	Black
Degree of protection (IP), front side	Toggle
Degree of protection (NEMA)	No
Product Standards	Screw connection
UL File No.	IP65
UL Category Control No.	12
CSA File No.	UL 60947-4-1;CSA - C22.2 No. 60947-4-1-14; CSA-C22.2 No. 94; IEC/EN 60947-3; CE marking
CSA Class No.	E36332
North America Certification	NLRV
Specially designed for North America	12528
Suitable for	3211-07
Degree of Protection	UL listed, CSA certified

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.