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Siemens SIRIUS ACT Enclosure for command devices, 22 mm, round, Enclosure material metal, Enclosure top part yellow, with protective collar, 1 control point metal, A=EMERGENCY STOP mushroom pushbutton red, 40 mm, rotate-to-unlatch, 1 NC, 1 NC, screw terminal, floor mounting, 1XM20 each on top and bottom

Part number3SU1851-0NB00-2AC2EAN / GTIN4011209969322HS code8536.50
Control & Automation
Pushbuttons & Pilot Lights
MOQ:1

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Product Description

Siemens 3SU1851-0NB00-2AC2 — SIRIUS ACT 22 mm command and signalling device. Panel-mount pushbutton, indicator lamp or emergency-stop actuator in the 22 mm cutout family. SIRIUS ACT Emergency stop in metal enclosure Complete emergency stop button in enclosure.

Technical Specifications

Manufacturer part number (MPN)
3SU1851-0NB00-2AC2
EAN / GTIN
4011209969322
Sales unit
pcs
Product brand name
SIRIUS ACT
Product designation
Enclosures
Product type designation
3SU1
Equipment of commanding and signaling device
A = EMERGENCY STOP mushroom pushbutton, 40 mm, with positive latching acc. to ISO 13850 and rotate-to-unlatch mechanism
Design of the housing
with protective collar
Shape of the enclosure front
Square
Material of the enclosure
metal
Number of command points
1
Product component — EMERGENCY STOP device
Yes
Product component — protective collar
No
Color of the enclosure top part
yellow
Delivery state — as a kit
No
Delivery state — pre-wired on strip terminal
No
Fastening method of the enclosure
Vertical
Design of the actuating element
EMERGENCY STOP mushroom pushbutton
Suitability for use EMERGENCY OFF switch
Yes
Color of the actuating element
red
Material of the actuating element
plastic
Shape of the actuating element
round
Number of contact modules
2
Type of unlocking device
A = rotate-to-unlatch mechanism
Design of the front ring
Standard
Material of the holder
Plastic
Number of LED modules
0
Protection class IP
IP66, IP67, IP69(IP69K)
Degree of protection NEMA rating
1, 2, 3, 3R, 4, 4X, 12, 13
Shock resistance — according to IEC 60068-2-27
sinusoidal half-wave 15 g / 11 ms
Vibration resistance — according to IEC 60068-2-6
10 ... 500 Hz: 5 g
Reference code according to IEC 81346-2
S
Continuous current of the C characteristic MCB
10 A; for a short-circuit current smaller than 400 A
Continuous current of the quick DIAZED fuse link
10 A
Continuous current of the DIAZED fuse link gG
10 A
At AC — at 50 Hz rated value
5 ... 500 V
At AC — at 60 Hz rated value
5 ... 500 V
At AC — at DC rated value
5 ... 500 V
Design of the interface for communication
without
Design of the contact of auxiliary contacts
Silver alloy
Number of NC contacts for auxiliary contacts
2
Number of NO contacts for auxiliary contacts
0
Type of electrical connection of modules and accessories
Screw-type terminal
Type of electrical connection on enclosure
Cable routing above and below, both 1 x M20
Tightening torque of the screws in the bracket
1 ... 1.2 N·m
Tightening torque of fixing screws in the enclosure cover
1.5 ... 1.7 N·m
Tightening torque with screw-type terminals
0.8 ... 0.9 N·m
Proportion of dangerous failures — with low demand rate according to SN 31920
20 %
Proportion of dangerous failures — with high demand rate per NC contact according to SN 31920
20 %
B10 value with high demand rate according to SN 31920
100 000
Failure rate [FIT] with low demand rate per NC contact according to SN 31920
100 FIT
Device type according to ISO 13849-1
3
Safety device type according to IEC 61508-2
Type A
T1 value for proof test interval or service life according to IEC 61508
20 a
Ambient temperature — during operation
-25 ... +70 °C
Ambient temperature — during storage
-40 ... +80 °C
Fastening method of modules and accessories
Floor mounting
Installation/ mounting/ dimensions — height
89.4 mm
Installation/ mounting/ dimensions — width
85 mm
Installation/ mounting/ dimensions — depth
112.5 mm
Shape of the installation opening
round
Number of labels
0
Number of inscription plates
0
Number of contacts as normally closed contact
2
Degree of protection (IP)
IP67/IP69K
Country of origin
Germany

Standards & Compliance

HS Code
8536.50

Cross References

  • EAN 4011209969322
  • SAP 1000688538
  • Code 8297223

Product Documentation

Document preview: Siemens 3SU1851-0NB00-2AC2 — OEM Datasheet

Catalogue entry last verified: 2026-09-30. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.

Frequently asked questions

Where can I buy 3SU1851-0NB00-2AC2?
3SU1851-0NB00-2AC2 can be ordered from cballast.com as a Siemens catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
What is the manufacturer part number for this Siemens product?
The manufacturer part number is 3SU1851-0NB00-2AC2.
What is the HS code for 3SU1851-0NB00-2AC2?
The customs tariff (HS) code for 3SU1851-0NB00-2AC2 is 8536.50.
Who manufactures 3SU1851-0NB00-2AC2?
3SU1851-0NB00-2AC2 is a Siemens product in the Control & Automation range.
Is a datasheet available for 3SU1851-0NB00-2AC2?
Yes — the 3SU1851-0NB00-2AC2 datasheet can be viewed and downloaded on this page.
What is the minimum order quantity for 3SU1851-0NB00-2AC2?
The minimum order quantity is 1.
Is 3SU1851-0NB00-2AC2 available?
Yes — 3SU1851-0NB00-2AC2 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).