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Siemens 3RA2125-4BH27-0FB4
Load feeder fuseless, Direct-on-line starting 400 V AC
- MPN
- 3RA2125-4BH27-0FB4
- Category
- SIRIUS 3RA2 load feeders
Price and lead time confirmed within 1 business day
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- 12-month warranty (new) · 3-month (used/refurbished)
- 30-day returns, no restocking fee on unused parts
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What is the Siemens 3RA2125-4BH27-0FB4?
Load feeder fuseless, Direct-on-line starting 400 V AC, Size S0 13...20 A 24 V DC Spring-type terminal for 60 mm busbar systems (also fulfills type of coordination 1) Type of coordination 2, Iq = 150 kA 1 NO+1 NC (contactor) with diode combination plugged in at the front
Specifications
General
| product brand name | SIRIUS |
| product designation | Direct (on-line) starter |
| design of the product | for 60 mm busbars |
| product type designation | 3RA21 |
| manufacturer's article number — of the supplied contactor | 3RT2027-2FB40 |
| manufacturer's article number — of the supplied circuit-breakers | 3RV2021-4BA25 |
| manufacturer's article number — of the supplied busbar adapter | 8US1251-5NT11 |
| manufacturer's article number — of the supplied link module | 3RA2921-2AA00 |
General technical data
| size of the circuit-breaker | S0 |
| size of load feeder | S0 |
| power loss [W] for rated value of the current — at AC in hot operating state per pole | 5.8 W |
| power loss [W] for rated value of the current — without load current share typical | 5.9 W |
| type of calculation of power loss current-dependent | quadratic |
| insulation voltage with degree of pollution 3 at AC rated value | 690 V |
| surge voltage resistance rated value | 6 kV |
| degree of protection NEMA rating | other |
| shock resistance according to IEC 60068-2-27 | 6 g / 11 ms |
| mechanical service life (operating cycles) of contactor typical | 10 000 000 |
| type of coordination | 2 |
| reference code according to IEC 81346-2:2019 | Q |
| Net Weight | 1.343 kg |
Ambient conditions
| ambient temperature — during operation | -20 ... +60 °C |
| ambient temperature — during storage | -50 ... +80 °C |
| ambient temperature — during transport | -50 ... +80 °C |
| temperature compensation | -20 ... +60 °C |
| relative humidity during operation | 10 ... 95 % |
Main circuit
| number of poles for main current circuit | 3 |
| design of the switching contact | electromechanical |
| adjustable current response value current of the current-dependent overload release | 13 ... 20 A |
| operating voltage — rated value | 690 V |
| operating voltage — at AC-3 rated value maximum | 690 V |
| operating voltage — at AC-3e rated value maximum | 690 V |
| operating frequency rated value | 50 ... 60 Hz |
| operational current — at AC-3 at 400 V rated value | 20 A |
| operational current — at AC-3e at 400 V rated value | 20 A |
| operating power — at AC-3 — at 400 V rated value | 7 500 W |
| operating power — at AC-3e — at 400 V rated value | 7 500 W |
Control circuit/ Control
| type of voltage of the control supply voltage | DC |
| control supply voltage at DC rated value | 24 V |
| holding power of magnet coil at DC | 5.9 W |
Auxiliary circuit
| product extension auxiliary switch | Yes |
| number of NC contacts for auxiliary contacts | 1 |
| number of NO contacts for auxiliary contacts | 1 |
Protective and monitoring functions
| trip class | CLASS 10 |
| design of the overload release | thermal (bimetallic) |
| response value current of instantaneous short-circuit trip unit | 260 A |
UL/CSA ratings
| full-load current (FLA) for 3-phase AC motor — at 480 V rated value | 20 A |
| full-load current (FLA) for 3-phase AC motor — at 600 V rated value | 20 A |
| yielded mechanical performance [hp] — for single-phase AC motor — at 110/120 V rated value | 1.5 hp |
| yielded mechanical performance [hp] — for single-phase AC motor — at 230 V rated value | 3 hp |
| yielded mechanical performance [hp] — for 3-phase AC motor — at 200/208 V rated value | 7.5 hp |
| yielded mechanical performance [hp] — for 3-phase AC motor — at 220/230 V rated value | 7.5 hp |
| yielded mechanical performance [hp] — for 3-phase AC motor — at 460/480 V rated value | 15 hp |
Short-circuit protection
| product function short circuit protection | Yes |
| design of the short-circuit trip | magnetic |
| conditional short-circuit current (Iq) — at 400 V according to IEC 60947-4-1 rated value | 150 000 A |
Installation/ mounting/ dimensions
| mounting position | vertical |
| fastening method | for snapping onto 60 mm busbar systems |
| height | 260 mm |
| width | 45 mm |
| depth | 165 mm |
| required spacing — for grounded parts — forwards | 20 mm |
| required spacing — for grounded parts — backwards | 0 mm |
| required spacing — for grounded parts — upwards | 50 mm |
| required spacing — for grounded parts — at the side | 20 mm |
| required spacing — for grounded parts — downwards | 10 mm |
| required spacing — for live parts — forwards | 20 mm |
| required spacing — for live parts — backwards | 0 mm |
| required spacing — for live parts — upwards | 50 mm |
| required spacing — for live parts — downwards | 10 mm |
| required spacing — for live parts — at the side | 20 mm |
Connections/ Terminals
| type of electrical connection — for main current circuit | spring-loaded terminals |
| type of electrical connection — for auxiliary and control circuit | spring-loaded terminals |
Safety related data
| product function suitable for safety function | Yes |
| touch protection on the front according to IEC 60529 | finger-safe, for vertical contact from the front |
Communication/ Protocol
| protocol is supported — PROFINET IO protocol | No |
| protocol is supported — PROFIsafe protocol | No |
| protocol is supported AS-Interface protocol | No |
Downloads & documentation
Official documents from Siemens, downloaded directly from the manufacturer.
Data sheets & manuals
3RA2125-4BH27-0FB4: frequently asked questions
When can 3RA2125-4BH27-0FB4 be shipped?
3RA2125-4BH27-0FB4 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.
Can I pick up 3RA2125-4BH27-0FB4 in person?
Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.
Is express delivery available?
Yes — mention it when you request a quote for 3RA2125-4BH27-0FB4 and we'll include express shipping options in our reply.
My factory is down and I need this urgently — can you help?
For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 3RA2125-4BH27-0FB4, subject to availability and destination.
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