✔ In Stock (Can ship in 5-7 days)

Online Support 24/7
12 Months Warranty for New Products
30 Days Money Back Guarantee
| Type | 3RV1 |
| Breaker Type | Motor Protection Circuit Breakers |
| Rated current | 1.25 |
| Number of Poles | 1 pole |
| Setting range for thermal overload releases | 0.9...1.25 A |
| Instantaneous overcurrent releases | 26 A |
| Short-circuit breaking capacity | 100 kA |
| Weight approx. | 0.354 kg |
Circuit breaker size S0 For transformer protection A-release
0.9...1.25 A Short-circuit release 26 A Screw terminal Standard
switching capacity !!! Phased-out product !!! Successor is SIRIUS
3RV2 Preferred successor type is >>3RV2411-0KA10<<
product brand name SIRIUS
product designation circuit breaker
design of the product for transformer protection
General technical data
product extension
auxiliary switch Yes
power loss W for rated value of the current
at AC in hot operating state 7.25 W
at AC in hot operating state per pole 2.4 W
surge voltage resistance rated value 6 000 V
protection class IP
on the front IP20
shock resistance 25g / 11 ms
mechanical service life (switching cycles)
of the main contacts typical 100 000
continuous current rated value 1.25 A
Ambient conditions
installation altitude at height above sea level
maximum
2 000 m
ambient temperature
during operation -20 ... +60 degrees centigrade
during storage -50 ... +80 degrees centigrade
during transport -50 ... +80 degrees centigrade
Main circuit
number of poles for main current circuit 3
adjustable pick-up value current of the currentdependent
overload release
0.9 ... 1.25 A
operating voltage
rated value 690 V
at AC-3 rated value maximum 690 V
operating current
at AC-3
at 400 V rated value 1.25 A
operating frequency
at AC-3 maximum 15 1/h
Auxiliary circuit
number of CO contacts
for auxiliary contacts 0
Protective and monitoring functions
product function
ground fault detection No
phase failure detection Yes
trip class CLASS 10
maximum short-circuit current breaking capacity (Icu)
at AC at 240 V rated value 100 kA
at AC at 400 V rated value 100 kA
at AC at 500 V rated value 100 kA
at AC at 690 V rated value 100 kA
Short-circuit protection
design of the overcurrent release and short-circuit
release
thermomagnetic
Installation/ mounting/ dimensions
mounting position any
mounting type screw and snap-on mounting onto 35 mm standard mounting rail
according to DIN EN 50022
height 97 mm
width 45 mm
depth 96 mm
required spacing
with side-by-side mounting
backwards 0 mm
at the side 0 mm
Connections/ Terminals
product function
removable terminal for auxiliary and control
circuit
No
type of electrical connection
for main current circuit screw-type terminals
for auxiliary and control circuit screw-type terminals
arrangement of electrical connectors for main current
circuit
front side
type of connectable conductor cross-sections
for main contacts
solid 2x (1 ... 2.5 mm?), 2x (2.5 ... 6 mm?)
stranded 2x (1 ... 2.5 mm?), 2x (2.5 ... 6 mm?)
finely stranded with core end processing 2x (1 ... 2.5 mm?), 2x (2.5 ... 6 mm?)
at AWG conductors for main contacts 2x (14 ... 10)
Ask questions
(0/1,200)
- Q: How can I unsubscribe from marketing emails?
A: To unsubscribe from marketing emails, you can click on the "Unsubscribe" link located at the bottom of the email. This will allow you to opt out of receiving further marketing communications from us.
- Q: How can I compare prices and reviews of similar products?
A: On the product list page, you can view the prices and ratings of different items simultaneously. You can also use filters to sort products by price or rating, facilitating your comparison and selection.
- Q: How can I participate in promotions or giveaways organized by sellers?
A: We regularly hold promotional events and organize giveaways and gift activities. You can follow our official announcements, emails, or social media channels to get information on how to participate and the details of these activities.
Reviews
- N
Neil Dick
Jul 17, 2025
Siemens Circuit Breaker 3RV1421-0KA10Extremely satisfied with the product and service.HelpfulUnhelpful - R
Robert Browand
Jun 21, 2025
Siemens Circuit Breaker 3RV1421-0KA10My order was delivered in 5 days, great job.HelpfulUnhelpful - J
Joel Goodell
Oct 04, 2024
Siemens Circuit Breaker 3RV1421-0KA10Impressive service - got my package in a snap.HelpfulUnhelpful - S
SD Williams
Apr 13, 2024
Siemens Circuit Breaker 3RV1421-0KA10very happy with the product and the speed of the deliveryHelpfulUnhelpful - A
Anonymous user
Nov 25, 2022
Siemens Circuit Breaker 3RV1421-0KA10All was ok! No problems whatsoever.HelpfulUnhelpful
Siemens Circuit Breaker 3RV1421-0KA10
✔ In Stock (Can ship in 5-7 days)

Online Support 24/7
12 Months Warranty for New Products
30 Days Money Back Guarantee
People who bought this item also viewed
GE Circuit Breaker SFKOG 1.6-2.5A
Siemens Circuit Breaker 3WT8406-5UG03-5AB1
Siemens Circuit Breaker 5SY7616-7CC
Siemens Circuit Breaker 3WT8100-5UG04-5AB1
Siemens Circuit Breaker 5SY4440-8CC
Siemens Circuit Breaker 5SY7413-7CC
Siemens Circuit Breaker 3AH5404-1
Siemens Circuit Breaker 5SY7608-7CC
Honeywell Circuit Breaker HMS-2C6
TRIAD Transformer F-134P
Siemens Contactor 3RT2518-1BJ80
Ferraz Shawmut Fuse FR22AM69V8
TAIAN Relay RHU-10K/M 7.2-10A
IRC Resistor RNC65H2104FS
Customers frequently viewed
IWAYA DENKI Water Pump 25CJT0752
Panasonic Servo Motor MHMF022L1V2M
Honeywell Solenoid Valve VE4025B1045
ROTEN Mechanical Seal 8E5K-22-X
SANDSUN Overload Pump VA08H-760
GS Battery 6-QW-60(450)-(55D23L-KR)
Rechi Compressor 44R273A
MINDMAN Air Cylinder MCQV2-11-40-200
Mitsubishi Compressor YB645WTG
Saginomiya Expansion Valve ATX-34035DVCL
ISCAR Tool for Metal Cutting TGFH26-4
ASHUN Overflow Valve SRV-06G-2P
MINDMAN Switch MCHW-25D
Mitsubishi Servo Motor HF104T-A48
TPC Air Cylinder TCA2B80-400
Honeywell Sensor PBN1B222-R6
Copeland Compressor 6DT1A3000-FSD-800
Littelfuse Fuse KLK-3-1-2

