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Siemens 3RT1276-6NB36

Vacuum contactor AC-3e/AC-3 500 A, 250 kW / 400 V, 3-pole

MPN: 3RT1276-6NB36
Category: SIRIUS 3RT12 and 3TF6 vacuum contactors

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What is the Siemens 3RT1276-6NB36?

vacuum contactor AC-3e/AC-3 500 A, 250 kW / 400 V, 3-pole, Uc: 21-27.3 V AC(50-60 Hz) / DC PLC input 24 V DC drive: electronic auxiliary contacts 2 NO + 2 NC main circuit: busbar control and auxiliary circuit: screw terminal

Specifications

General

product brand name	SIRIUS
product designation	Power contactor
product type designation	3RT12

General technical data

size of contactor	S12
product extension — function module for communication	No
product extension — auxiliary switch	Yes
power loss [W] for rated value of the current — at AC in hot operating state	96 W
power loss [W] for rated value of the current — at AC in hot operating state per pole	32 W
power loss [W] for rated value of the current — without load current share typical	3.6 W
type of calculation of power loss current-dependent	quadratic
insulation voltage — of main circuit with degree of pollution 3 rated value	1 000 V
insulation voltage — of auxiliary circuit with degree of pollution 3 rated value	500 V
surge voltage resistance — of main circuit rated value	8 kV
surge voltage resistance — of auxiliary circuit rated value	6 kV
maximum permissible voltage for protective separation between coil and main contacts according to EN 60947-1	690 V
shock resistance at rectangular impulse — at AC	8,5 g / 5 ms, 4,2 g / 10 ms
shock resistance at rectangular impulse — at DC	8,5 g / 5 ms, 4,2 g / 10 ms
shock resistance with sine pulse — at AC	13,4 g / 5 ms, 6,5 g / 10 ms
shock resistance with sine pulse — at DC	13,4 g / 5 ms, 6,5 g / 10 ms
mechanical service life (operating cycles) — of contactor typical	10 000 000
mechanical service life (operating cycles) — of the contactor with added electronically optimized auxiliary switch block typical	5 000 000
mechanical service life (operating cycles) — of the contactor with added auxiliary switch block typical	10 000 000
reference code according to IEC 81346-2	Q
Substance Prohibitance (day/month/year)	05/01/2012
SVHC substance name	Lead CAS-No. 7439-92-1 Lead monoxide (lead oxide) CAS-No. 1317-36-8 2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one CAS-No. 71868-10-5 Melamine CAS-No. 108-78-1 6,6'-di-tert-butyl-2,2'-methylenedi-p-cresol CAS-No. 119-47-1
Net Weight	10.591 kg

Ambient conditions

installation altitude at height above sea level maximum	2 000 m
ambient temperature — during operation	-25 ... +60 °C
ambient temperature — during storage	-55 ... +80 °C
relative humidity minimum	10 %
relative humidity at 55 °C according to IEC 60068-2-30 maximum	95 %

Main circuit

number of poles for main current circuit	3
number of NO contacts for main contacts	3
number of NC contacts for main contacts	0
operating voltage — at AC-3 rated value maximum	1 000 V
operating voltage — at AC-3e rated value maximum	1 000 V
operational current — at AC-1 at 400 V at ambient temperature 40 °C rated value	610 A
operational current — at AC-1 — up to 690 V at ambient temperature 40 °C rated value	610 A
operational current — at AC-1 — up to 690 V at ambient temperature 60 °C rated value	550 A
operational current — at AC-3 — at 400 V rated value	500 A
operational current — at AC-3 — at 500 V rated value	500 A
operational current — at AC-3 — at 690 V rated value	500 A
operational current — at AC-3e — at 400 V rated value	500 A
operational current — at AC-3e — at 500 V rated value	500 A
operational current — at AC-3e — at 690 V rated value	500 A
operational current — at AC-4 at 400 V rated value	430 A
operational current — at AC-6a — up to 230 V for current peak value n=20 rated value	439 A
operational current — at AC-6a — up to 400 V for current peak value n=20 rated value	439 A
operational current — at AC-6a — up to 500 V for current peak value n=20 rated value	439 A
operational current — at AC-6a — up to 690 V for current peak value n=20 rated value	439 A
operational current — at AC-6a — up to 230 V for current peak value n=30 rated value	293 A
operational current — at AC-6a — up to 400 V for current peak value n=30 rated value	293 A
operational current — at AC-6a — up to 500 V for current peak value n=30 rated value	293 A
operational current — at AC-6a — up to 690 V for current peak value n=30 rated value	293 A
minimum cross-section in main circuit at maximum AC-1 rated value	370 mm²
operational current for approx. 200000 operating cycles at AC-4 — at 400 V rated value	215 A
operational current for approx. 200000 operating cycles at AC-4 — at 690 V rated value	215 A
operating power — at AC-3 — at 230 V rated value	160 kW
operating power — at AC-3 — at 400 V rated value	250 kW
operating power — at AC-3 — at 500 V rated value	355 kW
operating power — at AC-3 — at 690 V rated value	500 kW
operating power — at AC-3e — at 230 V rated value	160 kW
operating power — at AC-3e — at 400 V rated value	250 kW
operating power — at AC-3e — at 500 V rated value	355 kW
operating power — at AC-3e — at 690 V rated value	500 kW
operating power for approx. 200000 operating cycles at AC-4 — at 400 V rated value	122 kW
operating power for approx. 200000 operating cycles at AC-4 — at 690 V rated value	212 kW
operating apparent power at AC-6a — up to 230 V for current peak value n=20 rated value	170 kVA
operating apparent power at AC-6a — up to 400 V for current peak value n=20 rated value	300 kVA
operating apparent power at AC-6a — up to 500 V for current peak value n=20 rated value	380 kVA
operating apparent power at AC-6a — up to 690 V for current peak value n=20 rated value	520 kVA
operating apparent power at AC-6a — up to 230 V for current peak value n=30 rated value	110 kVA
operating apparent power at AC-6a — up to 400 V for current peak value n=30 rated value	200 kVA
operating apparent power at AC-6a — up to 500 V for current peak value n=30 rated value	250 kVA
operating apparent power at AC-6a — up to 690 V for current peak value n=30 rated value	350 kVA
operating apparent power at AC-6a — up to 1000 V for current peak value n=30 rated value	500 kVA
no-load switching frequency — at AC	1 000 1/h
no-load switching frequency — at DC	1 000 1/h
operating frequency — at AC-1 maximum	700 1/h
operating frequency — at AC-2 maximum	250 1/h
operating frequency — at AC-3 maximum	750 1/h
operating frequency — at AC-3e — maximum	750 1/h
operating frequency — at AC-4 maximum	250 1/h

Control circuit/ Control

type of voltage of the control supply voltage	AC/DC
control supply voltage at AC — at 50 Hz rated value	21 ... 27.3 V
control supply voltage at AC — at 60 Hz rated value	21 ... 27.3 V
control supply voltage at DC rated value	21 ... 27.3 V
operating range factor control supply voltage rated value of magnet coil at DC — initial value	0.8
operating range factor control supply voltage rated value of magnet coil at DC — full-scale value	1.1
operating range factor control supply voltage rated value of magnet coil at AC — at 50 Hz	0.8 ... 1.1
operating range factor control supply voltage rated value of magnet coil at AC — at 60 Hz	0.8 ... 1.1
type of PLC-control input according to IEC 60947-1	Type 2
consumed current at PLC-control input according to IEC 60947-1 maximum	20 mA
voltage at PLC-control input rated value	24 V
operating range factor of the voltage at PLC-control input	0.8 ... 1.1
design of the surge suppressor	with varistor
apparent pick-up power — at minimum rated control supply voltage at AC — at 50 Hz	560 V·A
apparent pick-up power — at minimum rated control supply voltage at AC — at 60 Hz	560 V·A
apparent pick-up power — at maximum rated control supply voltage at AC — at 60 Hz	750 V·A
apparent pick-up power — at maximum rated control supply voltage at AC — at 50 Hz	750 V·A
apparent pick-up power of magnet coil at AC — at 50 Hz	750 V·A
apparent pick-up power of magnet coil at AC — at 60 Hz	750 V·A
inductive power factor with closing power of the coil — at 50 Hz	0.8
inductive power factor with closing power of the coil — at 60 Hz	0.8
apparent holding power — at minimum rated control supply voltage at DC	3 V·A
apparent holding power — at maximum rated control supply voltage at DC	3.6 V·A
apparent holding power — at minimum rated control supply voltage at AC — at 50 Hz	5.6 V·A
apparent holding power — at minimum rated control supply voltage at AC — at 60 Hz	5.6 V·A
apparent holding power — at maximum rated control supply voltage at AC — at 50 Hz	9 V·A
apparent holding power — at maximum rated control supply voltage at AC — at 60 Hz	9 V·A
inductive power factor with the holding power of the coil — at 50 Hz	0.5
inductive power factor with the holding power of the coil — at 60 Hz	0.4
closing power of magnet coil at DC	800 W
holding power of magnet coil at DC	3.6 W
closing delay — at AC	60 ... 90 ms
closing delay — at DC	60 ... 90 ms
opening delay — at AC	80 ... 100 ms
opening delay — at DC	80 ... 100 ms
arcing time	10 ... 15 ms
control version of the switch operating mechanism	PLC-IN or Standard A1 - A2 (adjustable)

Auxiliary circuit

number of NC contacts for auxiliary contacts instantaneous contact	2
number of NO contacts for auxiliary contacts instantaneous contact	2
operational current at AC-12 maximum	10 A
operational current at AC-15 — at 230 V rated value	6 A
operational current at AC-15 — at 400 V rated value	3 A
operational current at AC-15 — at 500 V rated value	2 A
operational current at AC-15 — at 690 V rated value	1 A
operational current at DC-12 — at 24 V rated value	10 A
operational current at DC-12 — at 48 V rated value	6 A
operational current at DC-12 — at 60 V rated value	6 A
operational current at DC-12 — at 110 V rated value	3 A
operational current at DC-12 — at 125 V rated value	2 A
operational current at DC-12 — at 220 V rated value	1 A
operational current at DC-12 — at 600 V rated value	0.15 A
operational current at DC-13 — at 24 V rated value	10 A
operational current at DC-13 — at 48 V rated value	2 A
operational current at DC-13 — at 60 V rated value	2 A
operational current at DC-13 — at 110 V rated value	1 A
operational current at DC-13 — at 125 V rated value	0.9 A
operational current at DC-13 — at 220 V rated value	0.3 A
operational current at DC-13 — at 600 V rated value	0.1 A
contact reliability of auxiliary contacts	1 faulty switching per 100 million (17 V, 1 mA)

UL/CSA ratings

full-load current (FLA) for 3-phase AC motor — at 480 V rated value	477 A
full-load current (FLA) for 3-phase AC motor — at 600 V rated value	472 A
yielded mechanical performance [hp] — for 3-phase AC motor — at 200/208 V rated value	150 hp
yielded mechanical performance [hp] — for 3-phase AC motor — at 220/230 V rated value	200 hp
yielded mechanical performance [hp] — for 3-phase AC motor — at 460/480 V rated value	400 hp
yielded mechanical performance [hp] — for 3-phase AC motor — at 575/600 V rated value	500 hp
contact rating of auxiliary contacts according to UL	A600 / Q600

Short-circuit protection

design of the miniature circuit breaker for short-circuit protection of the auxiliary circuit up to 230 V	C characteristic: 10 A; 0.4 kA
design of the fuse link — for short-circuit protection of the main circuit — with type of coordination 1 required	gG: 800 A (690 V, 100 kA)
design of the fuse link — for short-circuit protection of the main circuit — with type of coordination 2 required	gG: 800 A (690 V, 50 kA), aM: 630 A (690 V, 50 kA), BS88: 800 A (415 V, 50 kA)
design of the fuse link — for short-circuit protection of the auxiliary switch required	gG: 10 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 mounting	Yes
fastening method	screw fixing
height	217 mm
width	160 mm
depth	225 mm
required spacing — with side-by-side mounting — forwards	20 mm
required spacing — with side-by-side mounting — upwards	10 mm
required spacing — with side-by-side mounting — downwards	10 mm
required spacing — with side-by-side mounting — at the side	0 mm
required spacing — for grounded parts — forwards	20 mm
required spacing — for grounded parts — upwards	10 mm
required spacing — for grounded parts — at the side	10 mm
required spacing — for grounded parts — downwards	10 mm
required spacing — for live parts — forwards	20 mm
required spacing — for live parts — upwards	10 mm
required spacing — for live parts — downwards	10 mm
required spacing — for live parts — at the side	10 mm

Connections/ Terminals

type of electrical connection — for main current circuit	Connection bar
type of electrical connection — for auxiliary and control circuit	screw-type terminals
type of electrical connection — at contactor for auxiliary contacts	Screw-type terminals
type of electrical connection — of magnet coil	screw terminal
width of connection bar	25 mm
thickness of connection bar	6 mm
diameter of holes	11 mm
number of holes	1
type of connectable conductor cross-sections — for AWG cables for main contacts	2/0 ... 500 kcmil
connectable conductor cross-section for main contacts — stranded	70 ... 240 mm²
connectable conductor cross-section for auxiliary contacts — solid or stranded	0.5 ... 4 mm²
connectable conductor cross-section for auxiliary contacts — finely stranded with core end processing	0.5 ... 2.5 mm²
type of connectable conductor cross-sections — for auxiliary contacts — solid	2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)
type of connectable conductor cross-sections — for auxiliary contacts — solid or stranded	2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)
type of connectable conductor cross-sections — for auxiliary contacts — finely stranded with core end processing	2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
type of connectable conductor cross-sections — for AWG cables for auxiliary contacts	2x (20 ... 16), 2x (18 ... 14), 1x 12
AWG number as coded connectable conductor cross section for auxiliary contacts	18 ... 14

Safety related data

product function — mirror contact according to IEC 60947-4-1	Yes
product function — positively driven operation according to IEC 60947-5-1	No
protection class IP on the front according to IEC 60529	IP00; IP20 with box terminal/cover
touch protection on the front according to IEC 60529	finger-safe, for vertical contact from the front with box terminal/cover

Downloads & documentation

Official documents from Siemens, downloaded directly from the manufacturer.

Data sheets & manuals

Product data sheet 3RT1276-6NB36PDF

3RT1276-6NB36: frequently asked questions

When can 3RT1276-6NB36 be shipped?

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