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Siemens 3TC7814-5KF

contactor, DC-3/DC-5, 400 A, 2-pole, 110 V DC, with varistor, auxiliary contacts: 4 NO + 4 NC, connecting bar

SiemensMFR # 3TC7814-5KFSKU # CEY-8EF3B038E221

product designationContactor

product type designation3TC

size of contactor12

function module for communicationNo

auxiliary switchNo

insulation voltage rated value1 500 V

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About This Product

contactor, DC-3/DC-5, 400 A, 2-pole, 110 V DC, with varistor, auxiliary contacts: 4 NO + 4 NC, connecting bar

Siemens 3TC7814-5KF

Genuine, certified Siemens product
Fast sourcing through a worldwide supply network
Product selection and compatibility support from our technical team
Equivalent and alternative product suggestions
Quotation and lead time tailored to your request

Specifications

product designationContactor

product type designation3TC

General technical data

size of contactor12

function module for communicationNo

auxiliary switchNo

insulation voltage rated value1 500 V

surge voltage resistance rated value8 kV

maximum permissible voltage for protective separation between coil and main contacts according to EN 60947-1630 V

of contactor typical30 000 000

of the contactor with added auxiliary switch block typical30 000 000

reference code according to IEC 81346-2Q

Substance Prohibitance (day/month/year)03/01/2017

SVHC substance nameLead CAS-No. 7439-92-1

Net Weight23.225 kg

Ambient conditions

during operation-25 ... +55 °C

during storage-50 ... +80 °C

relative humidity minimum10 %

relative humidity at 55 °C according to IEC 60068-2-30 maximum95 %

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

— 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

— at 750 V rated value500 A

— 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

— at 750 V rated value500 A

— at 1500 V rated value500 A

— at 220 V rated value400 A

— at 600 V rated value400 A

— at 750 V rated value400 A

— 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

— at 750 V rated value400 A

— 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

— at 750 V rated value400 A

— at 1500 V rated value400 A

— 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 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

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 value110 V

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

operational current at AC-12 maximum10 A

at 230 V rated value5.6 A

at 400 V rated value3.6 A

at 500 V rated value2.5 A

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

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

Short-circuit protection

— with type of coordination 1 required2 x 3NE1330-5E (315 A) parallel (1500 V, 12 kA)

— with type of coordination 2 required2 x 3NE1330-5E (315 A) parallel (1500 V, 12 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

fastening method side-by-side mountingYes

fastening methodscrew fixing

height375 mm

width160 mm

depth290 mm

— forwards20 mm

— backwards0 mm

— upwards25 mm

— downwards10 mm

— at the side10 mm

— forwards50 mm

— backwards0 mm

— upwards25 mm

— at the side10 mm

— downwards10 mm

— forwards50 mm

— backwards0 mm

— upwards25 mm

— downwards10 mm

— at the side10 mm

Connections/ Terminals

type of electrical connectionscrew terminal

for main current circuitscrew-type terminals

for auxiliary and control circuitscrew-type terminals

— solid or stranded2x (1 ... 2.5 mm²)

— finely stranded with core end processing2x (0.75 ... 1.5 mm²)

Safety related data

product function mirror contact according to IEC 60947-4-1Yes; 1 auxiliary NC contact each of the right and left current path must be connected in series

Electrical Safety

protection class IP on the front according to IEC 60529IP00