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3UL2306-1A
Current Sensing Transformer, 140 mm, 40 A, Panel
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: SIEMENS
- Product type: Current Sensing Transformers
- SVHC: To Be Advised
- Inductance: -
- ET Constant: -
- Turns Ratio: -
- Product Range: 3UL23 Series
- Frequency Range: -
- Primary Current: 40A
- Transformer Mounting: Chassis Mount
- DC Resistance Primary: -
- Transformer Terminals: Screw
- DC Resistance Secondary: -
| Delivery and price | |
|---|---|
| Units per pack | 1 |
| Price | 366.27 € |
| Current stock | 10+ |
| Lead time | 30 days |
**3UL2306-1A** **Data sheet** Residual-current transformer for residual current monitoring Bushing opening 140 mm Residual current 30 mA...40 A ||Residual-current transformer for residual current monitoring Bushing opening 140<br>mm Residual current 30 mA...40 A|Residual-current transformer for residual current monitoring Bushing opening 140<br>mm Residual current 30 mA...40 A| |---|---|---| |**General technical data**<br>~~ees~~||| |**product brand name**<br>~~ees~~|SIRIUS<br>~~ees~~|| |**product designation**|Residual-current transformers|| |**product feature touchprotection**|Yes|| |**type of electrical connection at output**|screw-type terminals|| |**operating voltage rated value maximum**|690 V|| |**continuous currentperphase maximum**|500 A|| |**fault current at input rated value**|40 A|| |**surge voltage resistance rated value**|6 kV|| |**reference code according to IEC 81346-2**|B|| |**reference code according to DIN 40719 extended according**<br>**to IEC 204-2 according to IEC 750**|T|| |**reference code according to EN 61346-2**|B|| |**Connections/ Terminals**<br>~~eee~~||| |**type of connectable conductor cross-sections**<br>~~eee~~|~~eee~~|| |● solid|1x(0.5 ... 2.5 mm²)|| |● finelystranded||| |— with core endprocessing|1x(0.5 ... 1.5 mm²)|| |● for AWG cables||| |— solid|1x(20 ... 13)|| |**Ambient conditions**<br>~~eee~~||| |**ambient temperature**<br>~~eee~~|~~eee~~|| |● duringtransport|-25 ... +60 °C|| |● duringoperation|-25 ... +60 °C|| |● duringstorage|-40 ... +85 °C|| |**relative humidity during operation**|95 %|| |**installation altitude at height above sea level**|2 000 m|| |**Installation/ mounting/ dimensions**<br>~~eee~~||| |**diameter of inlet opening**<br>~~eee~~|140 mm<br>~~eee~~|| |**width**|201 mm|| |**height**|64 mm|| |**depth**|207.5 mm|| |**mounting position**|standing, on horizontal mountingsurface|| |**fastening method**|screw fixing|| |**tightening torque with screw-type terminals**|0.5 ... 0.6 N·m|| |**tightening torque [lbf·in] with screw-type terminals**|4.4 ... 5.3 lbf·in|| |**Certificates/ approvals**<br>~~ee~~||| |**General Product Approval**<br>~~ee~~||**Test Certificates**<br>~~ee~~| Subject to change without notice © Copyright Siemens 3UL23061A Page 1/3 5/29/2026 - Type Test Certific ates/Test Report **==> picture [19 x 6] intentionally omitted <==** **----- Start of picture text -----**<br> other<br>**----- End of picture text -----**<br> ## **Environment** Confirmation Confirmation Environmental Confirmations QC PASS —_ ~~a~~ ~~——‘(i‘i;tsCsis~~ **Further information Information on the packaging** https://support.industry.siemens.com/cs/ww/en/view/109813875 **Information for data generation and storage** https://support.industry.siemens.com/cs/ww/en/view/109995012 **Information- and Downloadcenter (Catalogs, Brochures,…)** https://www.siemens.com/ic10 **Industry Mall (Online ordering system)** https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=3UL2306-1A **Cax online generator** https://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3UL2306-1A **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/3UL2306-1A **Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)** https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3UL2306-1A&lang=en **==> picture [211 x 336] intentionally omitted <==** **----- Start of picture text -----**<br> 201<br>[ \<br>110<br>— _=) an>|<br>140<br>207,5<br>6,2<br>64 50<br>**----- End of picture text -----**<br> Subject to change without notice © Copyright Siemens 3UL23061A Page 2/3 5/29/2026 **==> picture [456 x 339] intentionally omitted <==** **----- Start of picture text -----**<br> a ee<br>-B |<br>S2<br>|<br>|<br>S1<br>|<br>_ _ _ _ _ |<br>last modified: 10/22/2025<br>L1 L2 L3 N<br>**----- End of picture text -----**<br> Subject to change without notice © Copyright Siemens 3UL23061A Page 3/3 5/29/2026
Updated at June 4, 2026
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