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PTCB E1 24DC/4A SI-R
ELECTRONIC CB, 4A, 24VDC, 10MS, DIN RAIL
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: PHOENIX CONTACT
- Product type: Electronic Circuit Breakers
- SVHC: No SVHC (04-Feb-2026)
| Delivery and price | |
|---|---|
| Units per pack | 20 |
| Price | 38.39 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
## PTCB E1 24DC/4A SI-R - Electronic circuit breaker 1135745 https://www.phoenixcontact.com/gb/products/1135745 Please be informed that the data shown in this PDF document is generated from our online catalog. Please find the complete data in the user documentation. Our general terms of use for downloads are valid. 1-channel, electronic fuse for protecting 24 V loads. Easy potential distribution with terminal blocks from the CLIPLINE complete system. With status output, reset input, and electronic interlock. For installation on DIN rails. ## Your advantages - - - - - Simple application setup due to bridging option to CLIPLINE complete terminal block system - More space in the control cabinet: narrowest protection on just 6 mm width - Individual setup for suitable protection, exactly according to your requirements - Enhanced diagnostic and control options, thanks to integrated status output and reset input - Optimum protection for cables and sensors as well as NEC Class 2 circuits by means of an additional internal output fuse ## Commercial data |Item number|1135745| |---|---| |Packing unit|1 pc| |Minimum order quantity|1 pc| |Sales key|CLA135| |Product key|CLA135| |GTIN|4063151069575| |Weight per piece (including packing)|34.2 g| |Weight per piece (excluding packing)|27.5 g| |Customs tariff number|85363010| |Country of origin|DE| ## PTCB E1 24DC/4A SI-R - Electronic circuit breaker 1135745 https://www.phoenixcontact.com/gb/products/1135745 ## Technical data ## Notes |otes|| |---|---| |General|| |Note|EN 50121-3-2: Railway applications - Electromagnetic<br>compatibility - Part 3-2: Rolling stock – Apparatus| ||Connection for signal line tested in accordance with EN 61000-4-<br>4 with 1 kV; if necessary, customer must provide appropriate<br>protective measures| ||Repeated hard short circuits can reduce the melting integral of<br>the integrated backup fuse.| ## Product properties |Product type|Device circuit breakers| |---|---| |Product family|PTCB| |Type|DIN rail module, one-piece| |Number of positions|1| |Insulation characteristics|| |Protection class|III| |Pollution degree|2| ## Electrical properties General Operating voltage 18 V DC ... 27.5 V DC Rated voltage 24 V DC Rated current IN 24 A (Total current input) 4 A (Rated current output) Rated current (pre-adjusted) 4 A Rated surge voltage 0.5 kV Tripping method E (electronic) Feedback resistance max. 35 V DC Required backup fuse Only required if Imax of the power supply > the short-circuit switching capacity. Integrated failsafe element. Short-circuit switching capacity 300 A Dielectric strength max. 35 V DC (Load circuit) Fuse electronic Efficiency > 99 % Closed circuit current I0 typ. 8 mA Power dissipation typ. 0.15 W (No-load operation) < 1.1 W (Nominal operation) Module initialization time < 0.55 s Waiting time after switch off of a channel 5 s (at overload / short circuit) Measuring tolerance I ± 15 % Apr 8, 2026, 10:48�AM Page 2 (13) ## PTCB E1 24DC/4A SI-R - Electronic circuit breaker ## 1135745 https://www.phoenixcontact.com/gb/products/1135745 |Temperature derating|21 A (Total current at 60°C)| |---|---| ||24 A (Total current at 50°C)| ||4 A (Channel current at 60°C)| ||4 A (Channel current at 50°C)| |MTBF (IEC 61709, SN 29500)|27027027 h (at 25 °C with 21 % load)| ||13157894 h (at 40°C with 34.25% load)| ||1960784 h (at 60°C with 100% load)| |Voltage drop|0.13 V (at 4 A)| |Fail-safe element|5 A DC| |Contact switching type|without electrical isolation| |Load circuit|| |Shutdown time|≤ 10 ms (for short circuit > 2.0 x IN)| ||1 s (1.2 ... 2.0 x IN)| |Undervoltage switch-off|≤ 17.8 V DC (active)| ||≥ 18.8 V DC (inactive)| |Overvoltage switch-off|≥ 27.5 V DC (active)| ||≤ 27 V DC (inactive)| |Max. capacitive load|15000 µF (Depending on the current setting and the short-circuit<br>current available)| |Reset|| |Input voltage range|7 V DC ... 30 V DC (Reset with falling edge)| |Current consumption|typ. 0.4 mA (at 24 V DC)| |Pulse length|≥ 50 ms (High)| ||≥ 50 ms (Low)| |Voltage|< 5 V DC (Low state)| ||> 8 V DC (High state)| |Stripping length|8 mm| |Conductor cross-section rigid|0.2 mm² ... 2.5 mm²| |Conductor cross-section AWG|24 ... 12| |Conductor cross-section, flexible, with ferrule, with plastic sleeve|0.25 mm² ... 2.5 mm²| |Conductor cross-section, flexible, with ferrule, without plastic<br>sleeve|0.25 mm² ... 2.5 mm²| |Status output|| |Output voltage|24 V DC (Error)| ||0 V DC (no error)| |Output current|max. 0.015 A (Short-circuit-proof)| |Stripping length|8 mm| |Conductor cross-section rigid|0.2 mm² ... 4 mm²| |Conductor cross-section AWG|24 ... 12| |Conductor cross-section, flexible, with ferrule, with plastic sleeve|0.25 mm² ... 2.5 mm²| |Conductor cross-section, flexible, with ferrule, without plastic<br>sleeve|0.25 mm² ... 2.5 mm²| Apr 8, 2026, 10:48�AM Page 3 (13) ## PTCB E1 24DC/4A SI-R - Electronic circuit breaker 1135745 https://www.phoenixcontact.com/gb/products/1135745 ## Connection data |onnection data|| |---|---| |Main circuit IN+|| |Connection method|Push-in connection| |Stripping length|8 mm| |Conductor cross-section flexible|0.2 mm² ... 2.5 mm²| |Conductor cross-section rigid|0.2 mm² ... 4 mm²| |Conductor cross-section AWG|24 ... 12| |Conductor cross-section, flexible, with ferrule, with plastic sleeve|0.2 mm² ... 2.5 mm²| |Conductor cross-section, flexible, with ferrule, without plastic|0.2 mm² ... 2.5 mm²| |sleeve|| |Main circuit IN-|| |Connection method|Push-in connection| |Stripping length|8 mm| |Conductor cross-section flexible|0.2 mm² ... 2.5 mm²| |Conductor cross-section rigid|0.2 mm² ... 4 mm²| |Conductor cross-section AWG|24 ... 12| |Conductor cross-section, flexible, with ferrule, with plastic sleeve|0.2 mm² ... 2.5 mm²| |Conductor cross-section, flexible, with ferrule, without plastic|0.2 mm² ... 2.5 mm²| |sleeve|| |Conductor cross-section, flexible, with ferrule, without plastic<br>sleeve|0.2 mm² ... 2.5 mm²| |---|---| |Main circuit OUT|| |Connection method|Push-in connection| |Stripping length|8 mm| |Conductor cross-section flexible|0.2 mm² ... 2.5 mm²| |Conductor cross-section rigid|0.2 mm² ... 4 mm²| |Conductor cross-section AWG|24 ... 12| |Conductor cross-section, flexible, with ferrule, with plastic sleeve|0.2 mm² ... 2.5 mm²| |Conductor cross-section, flexible, with ferrule, without plastic|0.2 mm² ... 2.5 mm²| |sleeve|| ## Signaling |Channel LED off|off (Channel switched off)| |---|---| |Channel LED yellow|lit (Channel switched on, channel load > 80% )| ||flashing (Programming mode active)| |Channel LED green|lit (Channel switched on)| |Channel LED red|lit (Channel switched off, over- or undervoltage active)| ||ON temporarily (Channel switched off, 5 s cool-down phase,<br>overload or short-circuit release)| ||flashing (Channel switched off, ready to be switched back on,<br>overload or short-circuit release)| ||flashing quickly (Channel switched off, external voltage at the<br>output, possible installation error)| Dimensions Apr 8, 2026, 10:48�AM Page 4 (13) ## PTCB E1 24DC/4A SI-R - Electronic circuit breaker ## 1135745 https://www.phoenixcontact.com/gb/products/1135745 |Dimensional drawing|||| |---|---|---|---| ||rm<br>105.8|sg|i ps2| |Width|6.2 mm||| |Height|105.8 mm||| |Depth|55.6 mm (incl. DIN rail 7.5 mm)|55.6 mm (incl. DIN rail 7.5 mm)|55.6 mm (incl. DIN rail 7.5 mm)| ## Material specifications |Color||gray (RAL 7042)|gray (RAL 7042)| |---|---|---|---| |Material||PBT|| |||PBT|| |Flammability rating according to UL 94|Flammability rating according to UL 94|V-0|| ## Environmental and real-life conditions |Ambient conditions|| |---|---| |Degree of protection|IP20| |Ambient temperature (operation)|-30 °C ... 60 °C| |Ambient temperature (storage/transport)|-40 °C ... 70 °C| |Altitude|≤ 3000 m up to 52 °C (amsl)| ||≤ 4000 m up to 46 °C (amsl)| |Humidity test|96 h, 95 % RH, 40 °C| |Shock (operation)|30g (IEC 60068-2-27, Test Ea)| |Vibration (operation)|10 Hz ... 59.6 Hz (Amplitude ±0.35 mm; in accordance with| ||IEC 60068-2-6, Test Fc)| ||59.6 Hz ... 150 Hz (Acceleration 5g; in accordance with| ||IEC 60068-2-6, Test Fc)| ||5 Hz ... 100 Hz (Resonance search 4g; resonance frequency 4g;| ||90 min in accordance with DNV GL Class B)| ## Approvals |UL approval|| |---|---| |Identification|UL/C-UL Listed UL 508| ||UL Recognized UL 2367| ||NEC Class 2 according to UL 1310| ||UL/C-UL Listed ANSI/UL 121201 Class I, Division 2, Groups A,| ||B, C, D; T4 (Hazardous Location)| |Shipbuilding approval|| |Identification|DNV GL| |Corrosive gas test|| |Identification|ISA S71.04.2013 G3 Harsh Group A| |Shipbuilding data|| ## PTCB E1 24DC/4A SI-R - Electronic circuit breaker ## 1135745 https://www.phoenixcontact.com/gb/products/1135745 |Temperature|D| |---|---| |Humidity|B| |Vibration|B| |EMC|B| |Enclosure|A| ## Standards and regulations ||Standards/specifications|EN 61000-6-2| |---|---|---| ||Note|EMC – Immunity for industrial areas| ||Standards/specifications|EN 61000-6-3| ||Note|EMC – Emission for residential, business and commercial| |||properties and small operations| ||Standards/specifications|EN 60068-2-78| ||Note|Environmental influences – Moisture and heat, constant| ||Standards/specifications|EN 50178| ||Note|Equipping power installations with electronic equipment| ||Standards/specifications|EN 60068-2-6| ||Note|Environmental influences – Vibrations (sinusoidal)| ||Standards/specifications|EN 60068-2-27| ||Note|Environmental influences – Shocks| ||Standards/specifications|EN 60068-2-30| ||Note|Environmental influences – Part 2–30: Tests – Test Db: Damp| |||heat, cyclical| ||Standards/specifications|EN 61373| ||Note|Railway applications - Rolling stock equipment - Shock and| |||vibration tests| ||Standards/specifications|EN 45545-2| ||Note|Railway applications - Fire protection on railway vehicles - Part 2:| |||Requirements for fire behavior of materials and components| ||ounting|| ||Mounting type|DIN rail: 35 mm| ## Mounting Apr 8, 2026, 10:48�AM Page 6 (13) ## PTCB E1 24DC/4A SI-R - Electronic circuit breaker 1135745 https://www.phoenixcontact.com/gb/products/1135745 ## Drawings **==> picture [93 x 10] intentionally omitted <==** **----- Start of picture text -----**<br> Dimensional drawing<br>**----- End of picture text -----**<br> **==> picture [412 x 157] intentionally omitted <==** **----- Start of picture text -----**<br> 105,8 6,2<br>48,1<br>55,6<br>**----- End of picture text -----**<br> Apr 8, 2026, 10:48�AM Page 7 (13) ## PTCB E1 24DC/4A SI-R - Electronic circuit breaker 1135745 https://www.phoenixcontact.com/gb/products/1135745 Diagram **==> picture [398 x 361] intentionally omitted <==** **----- Start of picture text -----**<br> t 1000<br>s<br>100<br>10<br>1<br>0,1<br>0,01<br>0,5 1 1,2 2<br>x I<br>N<br>**----- End of picture text -----**<br> Trigger characteristic in the DC range Apr 8, 2026, 10:48�AM Page 8 (13) ## PTCB E1 24DC/4A SI-R - Electronic circuit breaker 1135745 https://www.phoenixcontact.com/gb/products/1135745 **==> picture [408 x 501] intentionally omitted <==** **----- Start of picture text -----**<br> Diagram<br>28<br>26<br>24<br>22<br>20<br>18<br>-40 -20 0 20 40 60<br>T [°C]<br>Diagram<br>1,4<br>1,2<br>1,0<br>0,8<br>0,6<br>0,4<br>settings 1A, 2A, 3A<br>0,2 setting 4A<br>18 19 20 21 22 23 24 25 26 27 28<br>Input voltage [V]<br>I [A]<br>Tripping factor<br>**----- End of picture text -----**<br> Total current input Apr 8, 2026, 10:48�AM Page 9 (13) ## PTCB E1 24DC/4A SI-R - Electronic circuit breaker 1135745 https://www.phoenixcontact.com/gb/products/1135745 **==> picture [392 x 257] intentionally omitted <==** **----- Start of picture text -----**<br> Block diagram<br>IN + OUT +<br>SI<br>RST<br>µC<br>IN –<br>**----- End of picture text -----**<br> Apr 8, 2026, 10:48�AM Page 10 (13) ## PTCB E1 24DC/4A SI-R - Electronic circuit breaker 1135745 https://www.phoenixcontact.com/gb/products/1135745 ## Approvals To download certificates, visit the product detail page: https://www.phoenixcontact.com/gb/products/1135745 ||| |---|---| ||UL Recognized<br>Approval ID: FILE E 317172| ||| ||DNV GL<br>Approval ID: TAE00003UT| ||| ||UL Listed<br>Approval ID: E123528| ||| ||cUL Listed<br>Approval ID: E123528| ||| ||UL Recognized<br>Approval ID: E324415-20201030| ||| ||cUL Listed<br>Approval ID: E483407-20201030| ||| ||UL Listed<br>Approval ID: E483407-20201030| Apr 8, 2026, 10:48�AM Page 11 (13) ## PTCB E1 24DC/4A SI-R - Electronic circuit breaker 1135745 https://www.phoenixcontact.com/gb/products/1135745 ## Classifications |ECLASS|ECLASS|| |---|---|---| ||ECLASS-13.0|27140401| ||ECLASS-15.0|27140401| |ETIM||| ||ETIM 10.0|EC003538| |UNSPSC||| ||UNSPSC 21.0|39121400| Apr 8, 2026, 10:48�AM Page 12 (13) ## PTCB E1 24DC/4A SI-R - Electronic circuit breaker 1135745 https://www.phoenixcontact.com/gb/products/1135745 ## Environmental product compliance |ironmental product compliance|| |---|---| |EU RoHS|| |Fulfills EU RoHS substance requirements|Yes| |Exemption|7(a), 7(c)-I| |China RoHS|| |Environment friendly use period (EFUP)|EFUP-50| ||An article-related China RoHS declaration table can be found in<br>the download area for the respective article under "Manufacturer<br>declaration". For all articles with EFUP-E, no China RoHS<br>declaration table issued and required.| |EU REACH SVHC|| |REACH candidate substance (CAS No.)|Lead(CAS: 7439-92-1)| |SCIP|b7bef301-1978-43cc-90e9-5da5d9408eeb| |EF3.1 Climate Change|| |CO2e kg|0.837 kg CO2e| Phoenix Contact 2026 © - all rights reserved https://www.phoenixcontact.com PHOENIX CONTACT Ltd Halesfield 13, Telford Shropshire, TF7 4PG 01952 681700 info@phoenixcontact.co.uk Apr 8, 2026, 10:48�AM Page 13 (13)
Updated at April 23, 2026
Phoenix Contact is a global leader in industrial connection technology, automation systems, and electronic interface solutions. With decades of engineering heritage originating in Germany, the company develops robust components designed to ensure reliable power, data, and signal transmission across demanding manufacturing and industrial environments. The cornerstone of the Phoenix Contact portfolio is its industry-leading selection of connection technologies. The range features an exceptional variety of terminal blocks, including pluggable headers and sockets, highly reliable wire-to-board solutions, and versatile DIN rail terminal blocks. These foundational connectivity components are supported by a comprehensive ecosystem of power distribution blocks, interface modules, marking systems, and accessories engineered for seamless control cabinet wiring. Beyond physical connectivity, Phoenix Contact provides critical components for advanced automation, control, and system protection. The wider offering encompasses a broad spectrum of process controllers, high-efficiency AC/DC converters, and a comprehensive suite of power, safety, and solid-state relays. From precision signal converters and electronic circuit breakers to fiber optic cable assemblies, Phoenix Contact equips engineers with the high-performance technologies required to build secure, highly efficient, and future-ready industrial systems.
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