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SIEMENS 3TC7814-5KB 3TC7814-5KB SIEMENS Contactor size 12, 2-pole DC-4, Rated operating current 400 A Auxiliary switch 4 NO + 4 .. View larger
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3TC7814-5KB SIEMENS Contactor size 12, 2-pole DC-4, Rated operating current 400 A Auxiliary switch 4 NO + 4 ..

3TC7814-5KB

78145

SIEMENS

1 Pcs.

Contactor size 12, 2-pole DC-4, Rated operating current 400 A Auxiliary switch 4 NO + 4 NC DC operation 24 V DC with integrated varistor

Automation > Power contactor, DC switching
Contactors for switching motors

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ETIM: EC002552 - Power contactor, DC switching

Value Unit
Rated control supply voltage Us at DC (EF003980) ['24', '24']V
Voltage type for actuating (EF008242) DC
Rated operation power at DC-3 / DC-5 at 440 V (EF007026) 140.0kW
Rated operation current Ie at DC-3 / DC-5 at 440 V (EF007035) 400A
Modular version (EF001126) true
Number of auxiliary contacts as normally open contact (EF001376) 4
Number of auxiliary contacts as normally closed contact (EF001377) 4
Type of electrical connection of main circuit (EF006819) Screw connection
Number of normally closed contacts as main contact (EF001375) 0
Number of main contacts as normally open contact (EF001374) 2
Rated control supply voltage Us at AC 50HZ (EF003978) -V
Rated control supply voltage Us at AC 60HZ (EF003979) -V


Contactor size 12, 2-pole DC-4, Rated operating current 400 A Auxiliary switch 4 NO + 4 NC DC operation 24 V DC with integrated varistor
Product designationContactor
Product type designation3TC
General technical data
Size of contactor12
Product extension
● function module for communicationNo
● Auxiliary switchNo
Insulation voltage rated value1 500 V
Surge voltage resistance rated value8 kV
maximum permissible voltage for safe isolation between coil and main contacts acc. to EN 60947-1630 V
● Protection class IPIP00
● protection class IP on the frontIP00
● Protection class IP of the terminalIP00
Mechanical service life (switching cycles)
● of contactor typical30 000 000
● of the contactor with added auxiliary switch block typical30 000 000
Reference code acc. to DIN EN 81346-2Q
Ambient conditions
Ambient temperature
● during operation-25 ... +55 °C
● during storage-50 ... +80 °C
Main circuit
number of poles2
Number of poles for main current circuit2
Number of NO contacts for main contacts2
Number of NC contacts for main contacts0
type of voltageDC
Operating current
● with 2 current paths in series at DC-1
— at 24 V rated value500 A
— at 110 V rated value500 A
— at 220 V rated value500 A
— at 440 V rated value500 A
— at 600 V rated value500 A
Operating current
● at DC-3 at DC-5
— at 220 V rated value400 A
— at 440 V rated value400 A
— at 600 V rated value400 A
— at 750 V rated value400 A
— at 1500 V rated value400 A
● with 2 current paths in series at DC-3 at DC-5
— at 24 V rated value400 A
— at 110 V rated value400 A
— at 220 V rated value400 A
— at 440 V rated value400 A
— at 600 V rated value400 A
Operating power
● at DC-1
— at 110 V rated value55 kW
— at 220 V rated value110 kW
— at 440 V rated value220 kW
— at 750 V rated value375 kW
— at 1500 V rated value750 kW
● at DC-3 at DC-5
— at 110 V rated value35 kW
— at 220 V rated value70 kW
— at 440 V rated value140 kW
— at 600 V rated value200 kW
— at 750 V rated value250 kW
— at 1200 V rated value400 kW
— at 1500 V rated value500 kW
Operating frequency
● at DC-1 maximum1 000 1/h
● at DC-3 maximum500 1/h
● at DC-5 maximum500 1/h
Control circuit/ Control
Type of voltage of the control supply voltageDC
Control supply voltage at DC
● rated value24 V
Operating range factor control supply voltage rated value of magnet coil at AC
● at 50 Hz0.8 ... 1.2
Design of the surge suppressorwith varistor
Closing power of magnet coil at DC92 W
Holding power of magnet coil at DC92 W
Closing delay at DC60 ... 100 ms
Opening delay at DC20 ... 35 ms
Arcing time40 ... 70 ms
Auxiliary circuit
Number of NC contacts for auxiliary contacts4
● instantaneous contact4
Number of NO contacts for auxiliary contacts4
● instantaneous contact4
Number of CO contacts
● for auxiliary contacts0
Identification number and letter for switching elements44
Operating current at AC-12 maximum10 A
Operating current at AC-15
● at 230 V rated value5.6 A
● at 400 V rated value3.6 A
● at 500 V rated value2.5 A
Operating current at DC-12
● at 24 V rated value10 A
● at 48 V rated value10 A
● at 60 V rated value10 A
● at 110 V rated value3.2 A
● at 125 V rated value2.5 A
● at 220 V rated value0.9 A
● at 600 V rated value0.22 A
Operating current at DC-13
● at 24 V rated value10 A
● at 48 V rated value5 A
● at 60 V rated value5 A
● at 110 V rated value1.14 A
● at 125 V rated value0.98 A
● at 220 V rated value0.48 A
● at 600 V rated value0.07 A
contact reliability of auxiliary contactsone incorrect switching operation of 100 million switching operations (17 V, 5 mA)
Short-circuit protection
Design of the fuse link
● for short-circuit protection of the main circuit
— with type of coordination 1 requiredgG: 630 A (690 V, 100 kA)
— with type of assignment 2 requiredgG: 500 A (690 V, 100 kA)
● for short-circuit protection of the auxiliary switch requiredgG: 16 A (500 V, 1 kA)
Installation/ mounting/ dimensions
mounting position+/-22,5° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface; standing, on horizontal mounting surface
Mounting typescrew fixing
● Side-by-side mountingYes
Height375 mm
Width160 mm
Depth290 mm
Required spacing
● with side-by-side mounting
— forwards20 mm
— Backwards0 mm
— upwards25 mm
— downwards10 mm
— at the side10 mm
● for grounded parts
— forwards50 mm
— Backwards0 mm
— upwards25 mm
— at the side10 mm
— downwards10 mm
● for live parts
— forwards50 mm
— Backwards0 mm
— upwards25 mm
— downwards10 mm
— at the side10 mm
Connections/ Terminals
● type of electrical connectionscrew-type terminals
● Type of electrical connection for main current circuitscrew-type terminals
● Type of electrical connection for auxiliary and control current circuitscrew-type terminals
Type of connectable conductor cross-sections
● for auxiliary contacts
— single or multi-stranded2x (1 ... 2,5 mm²)
— finely stranded with core end processing2x (0.75 ... 2.5 mm²)
Certificates/ approvals
General Product ApprovalFunctional Safety/Safety of MachineryTest Certificatesother

CCC

EAC

Type Examination Certificate

Special Test Certificate

Miscellaneous

Confirmation

Further information
Information- and Downloadcenter (Catalogs, Brochures,…)
Industry Mall (Online ordering system)
Cax online generator
Service&Support (Manuals, Certificates, Characteristics, FAQs,...)
Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)
Characteristic: Tripping characteristics, I²t, Let-through current
Further characteristics (e.g. electrical endurance, switching frequency)
last modified:08/13/2020


Product
Article Number (Market Facing Number)3TC7814-5KB
Product DescriptionContactor size 12, 2-pole DC-4, Rated operating current 400 A Auxiliary switch 4 NO + 4 NC DC operation 24 V DC with integrated varistor
Product familyNot available
Product Lifecycle (PLM)PM300:Active Product
Price data
Price Group41B
Surcharge for Raw MaterialsNone
Metal FactorLDP-----
Delivery information
Export Control RegulationsECCN : N / AL : N
Standard lead time ex-works15 Day/Days
Net Weight (kg)22,800 Kg
Product Dimensions (W x L x H)Not available
Packaging Dimension358,00 x 423,00 x 248,00
Package size unit of measureMM
Quantity Unit1 Piece
Packaging Quantity1
Additional Product Information
EAN4011209152694
UPC040892595833
Commodity Code85364900
LKZ_FDB/ CatalogIDCC-IC10
Product Group5807
Group CodeR711
Country of originGermany
Compliance with the substance restrictions according to RoHS directiveSince: 01.03.2017
Product classC: products manufactured / produced to order, which cannot be reused or re-utilised or be returned against credit.
WEEE (2012/19/EU) Take-Back ObligationYes
REACH Art. 33 Duty to inform according to the current list of candidates

Information obligation imposed by Article 33, REACH Regulation: This product includes one or several articles in which the following substance of the candidate list is contained in concentrations higher than 0,1% weight by weight (w/w):

Lead

Based on the information currently available, we assume that these substances do not pose any risk if the articles are used as intended (including disposal). Please also refer to product documentation.

Classifications
Not available

Product Datasheet

Electrica Online Product Datasheet Prepared from the current product description, catalog data and structured technical attributes.