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RZ3A60D75P
Solid State Relay, 3PST-NO, 75 A, 660 VAC, Panel Mount, Screw, Zero Crossing
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- Manufacturer: CARLO GAVAZZI
- Product type:
- SVHC: No SVHC (21-Jan-2025)
- Load Current: 75A
- Product Range: RZ3A Series
- Relay Mounting: Panel Mount
- Switching Mode: Zero Crossing
- Relay Terminals: Screw
- Control Voltage Max: 32VDC
- Control Voltage Min: 4VDC
- Contact Configuration: 3PST-NO
- Operating Voltage Max: 660VAC
- Operating Voltage Min: 42VAC
| Delivery and price | |
|---|---|
| Units per pack | 2 |
| Price | 318.28 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
## **RZ3A** ## **Industrial, 3-phase zero switching** ## **Main features** - 3-phase Solid State Relay - Zero switching - Rated operational current: 3 x 25, 55 or 75 A - Rated operational voltage: Up to 690 VAC - Control voltage, 4-32 VDC or 24-275 VAC - Integral snubber network - Built-in varistor - Over-temperature protection option with alarm output - IP 10 back-of-hand protection - LED indication of control input and over-temperature alarm status ## **Description** A Solid State Relay family designed to switch various loads such as heating elements, motors and transformers. The relay is capable of switching high voltages up to 600 VACrms. The built-in varistor secures transient protection for heavy industrial applications. For higher reliability and load cycle capability three semiconductor power units are soldered directly on to the direct copper bonded (DCB) substrate. AC- or DC-controlled versions are available. Built-in LED status indication for applied control voltage and overtemperature alarm (optional). The series covers a range of load currents up to 75 AACrms. ## **Applications** Plastic extrusion machines, thermoforming machines, blow moulding machines, coffee machines, electrical ovens, vending machines, soldering ovens, dryers, climatic chambers, air handling units, plastic sealing machines, shrink tunnels, etc. ## **Main functions** • 3-pole switching AC solid state relay **1** 24/05/2021 RZ3A DS ENG Carlo Gavazzi LTD **RZ3A** **==> picture [37 x 37] intentionally omitted <==** ## **References** ## **Order code** ## **RZ3A** Enter the code entering the corresponding option instead of **==> picture [484 x 180] intentionally omitted <==** **----- Start of picture text -----**<br> Code Option Description Notes<br>RZ - Solid State Relay<br>3 - Number of poles<br>A - Switching mode: zero switching<br>40 Rated operational voltage: 400 VACrms<br>48 Rated operational voltage: 480 VACrms<br>60 Rated operational voltage: 600 VACrms<br>69 Rated operational voltage: 690 VACrms Available only with 75 A version<br>D Control voltage: 4 - 32 VDC<br>A Control voltage: 24-275 VAC / 24-50 VDC<br>25 Rated operational current: 3 x 25 AACrms<br>55 Rated operational current: 3 x 55 AACrms<br>75 Rated operational current: 3 x 75 AACrms<br>P Over-temperature protection and alarm output Not available with 690 VAC version<br>**----- End of picture text -----**<br> ## **Selection guide** **==> picture [484 x 28] intentionally omitted <==** **----- Start of picture text -----**<br> Rated operational Rated operational current<br>Control voltage<br>voltage 3 x 25 A 3 x 55 A 3 x 75 A<br>**----- End of picture text -----**<br> |**Rated operational**<br>**voltage**|**Control voltage**|**Rated operational current**|**Rated operational current**|**Rated operational current**| |---|---|---|---|---| |||**3 x 25 A**|**3 x 55 A**|**3 x 75 A**| |||||| |400 VACrms|4-32 VDC|**RZ3A40D25**|**RZ3A40D55**|**RZ3A40D75**| ||24-275 VAC/<br>24-50 VDC|**RZ3A40A25**|**RZ3A40A55**|**RZ3A40A75**| |480 VACrms|4-32 VDC|**RZ3A48D25**|**RZ3A48D55**|**RZ3A48D75**| ||24-275 VAC/<br>24-50 VDC|**RZ3A48A25**|**RZ3A48A55**|**RZ3A48A75**| |600 VACrms|4-32 VDC|**RZ3A60D25**|**RZ3A60D55**|**RZ3A60D75**| ||24-275 VAC/<br>24-50 VDC|**RZ3A60A25**|**RZ3A60A55**|**RZ3A60A75**| |690 VACrms|4-32 VDC|**-**|**-**|**RZ3A69D75**| ||24-275 VAC/<br>24-50 VDC|**-**|**-**|**RZ3A69A75**| ## **Notes** Over-temperature protection and alarm output: add suffix P to include over-temperature protection and alarm output. Example: RZ3A60D75P. Not available on 690VACrms versions. **2** 24/05/2021 RZ3A DS ENG Carlo Gavazzi LTD **RZ3A** **==> picture [40 x 40] intentionally omitted <==** ## **CARLO GAVAZZI compatible components** |**Purpose**|**Component name/code**|**Notes**| |---|---|---| |Heatsinks|RHS|Heatsinks and fans| |Thermalpad|RZHT|Packing qty. 10pcs.| ## **Further reading** |**Information**|**Where to fnd it**| |---|---| |Online heatsink selector tool|<br>https://gavazziautomation.com/nsc/HQ/EN/solid_state_relays| **3** 24/05/2021 RZ3A DS ENG Carlo Gavazzi LTD **RZ3A** **==> picture [37 x 37] intentionally omitted <==** ## **Features** ## **General** |**Material**|Noryl| |---|---| |**Potting compound**|Polyurethane| |**Weight**|Approx. 380g| |**Rated isolation voltage**|Input to output: 4000 VACrms<br>Output to case: 4000 VACrms| |**Pollution degree**|3| |**Base plate**|25, 55A: aluminum, nickel-plated<br>75A: copper,nickel-plated| ## **Dimensions** **==> picture [367 x 362] intentionally omitted <==** **----- Start of picture text -----**<br> 73.5mm 4xM4 6xM5<br>12mm 5.3mm<br>A1 A2<br>Heatsink<br>Compound<br>B1 B2<br>47.6mm<br>41mm<br>L3 T3<br>92mm L2 T2<br>103mm<br>L1 T1<br>**----- End of picture text -----**<br> Relay On LED Over-temperature Alarm Trip LED (suffix “P” option) **4** 24/05/2021 RZ3A DS ENG Carlo Gavazzi LTD **RZ3A** **==> picture [40 x 40] intentionally omitted <==** ## **Performance** ## **Mains supply** **==> picture [484 x 62] intentionally omitted <==** **----- Start of picture text -----**<br> RZ3A40.. RZ3A48.. RZ3A60.. RZ3A69..<br>Operational voltage range 24-440 VAC 42-530 VAC 42-660 VAC 42-750 VAC<br>Operational frequency range 45 to 65 Hz<br>Blocking voltage 800 Vp 1200 Vp 1600 Vp 1600 Vp<br>Overvoltage category III<br>**----- End of picture text -----**<br> ## **Outputs** **==> picture [484 x 133] intentionally omitted <==** **----- Start of picture text -----**<br> RZ3A..25.. RZ3A..55.. RZ3A..75..<br>Rated operational current<br>AC 51 @ Ta = 25°C 25 Arms 55 Arms 75 Arms<br>AC 53a @ Ta = 25°C 5 Arms 15 Arms 20 Arms<br>Min. operational load current 150 mArms 250 mArms 400 mArms<br>Rep. overload current t=1 s 37 Arms < 125 Arms < 150 Arms<br>Non-rep. surge current t=10 ms 325 Ap 600 Ap 1150 Ap<br>Off-state leakage current < 3 mArms<br>I [2] t for fusing t=10 ms 525 A [2] s 1800 A [2] s 6600 A [2] s<br>Critical dV/dt off state min. ≥ 500 V/μs<br>On-state voltage drop < 1.6 Vrms<br>**----- End of picture text -----**<br> ## **Inputs** **==> picture [484 x 109] intentionally omitted <==** **----- Start of picture text -----**<br> RZ3A..D.. RZ3A..A..<br>Control voltage 4-32 VDC 24-275 VAC/24-50 VDC<br>Pick-up voltage 3.8 VDC 18 VAC/20 VDC<br>Drop-out voltage 1.2 VDC 9 VAC/DC<br>Input current ≤ 23 mA ≤ 15 mA<br>Response time pick-up<br>Power output = 50 Hz 10 ms 20 ms<br>Response time drop-out<br>Power output = 50 Hz 10 ms 30 ms<br>**----- End of picture text -----**<br> ## **Thermal data** |**Operating temperature**|-30° to +80°C(-22° to +176° F)| |---|---| |**Storage temperature**|-40° to +100°C(-40° to + 212° F)| |**Junction temperature**|+125°C(+ 257°F)| **5** 24/05/2021 RZ3A DS ENG Carlo Gavazzi LTD **RZ3A** **==> picture [360 x 401] intentionally omitted <==** **----- Start of picture text -----**<br> ||||| |---|---|---|---| |Compatibility and conformity| |>| |Approvals*| |CEAN|CAN|G|Hill| |Electromagnetic compatibility|(EMC) - immunity| |EN 61000-4-2| |Electrostatic discharge (ESD)| |8 kV air discharge, 4 kV contact (PC2)| |EN 61000-4-3| |10 V/m, from 80 MHz to 1 GHz (PC1)| |Radiated radio frequency| |10 V/m, from 1.4 to 2 GHz (PC1)| |3 V/m, from 2 to 2.7 GHz (PC1)| |EN 61000-4-4| |Electrical fast transient (burst)|Output: 2 kV, 5 kHz (PC1)| |Input: 1 kV, 5 kHz (PC1)| |EN 61000-4-6| |Conducted radio frequency| |10V/m, from 0.15 to 80 MHz (PC1)| |EN 61000-4-5| |Output, line to line: 1 kV (PC1)| |Electrical surge| |Output, line to earth: 2 kV (PC1)| |Input, line to earth: 1 kV (PC1)| |EN 61000-4-11| |0% for 0.5, 1 cycle (PC2)| |Voltage dips| |40% for 10 cycles (PC2)| |70% for 25 cycles (PC2)| |EN 61000-4-11| |Voltage Interruptions| |0% for 5000ms (PC2)| |Electromagnetic compatibility|(EMC) - emissions| |EN 55011| |Radio interference field emis-| |sion (radiated)|Class A: from 30 to 1000 MHz| |From 0.15 to 30 MHz| |Radio interference voltage| |EN 55011| |emissions (conducted)| |Class A (industrial) with filters| **----- End of picture text -----**<br> *UR, cUR and CSA not applicable for RZ3A69.. CSA approval for 75 A models (RZ3A..75.) is limited to 65 A @ 40°C. ## Note: - Performance Criteria 1 (PC1): no degradation of performance or loss of function is allowed when the product is operated as intended. - Performance Criteria 2 (PC2): during the test, degradation of performance or partial loss of function is allowed. However when the test is complete the product should return operating as intended by itself. - Performance Criteria 3 (PC3): temporary loss of function is allowed, provided the function can be restored by manual operation of the controls. - Control input lines must be installed together to maintain products' susceptability to Radio Frequency interference. **6** 24/05/2021 RZ3A DS ENG Carlo Gavazzi LTD **RZ3A** **==> picture [40 x 40] intentionally omitted <==** ## **Over-temperature protection (option: ...P)** **==> picture [475 x 212] intentionally omitted <==** **----- Start of picture text -----**<br> SSR Input* 20ms<br>Green LED<br>SSR Output<br>Over-temperature Over-temperature<br>sensing detection<br>Red LED Over-temperature protection is ON<br>SSR output disabled<br>Closed<br>Alarm status<br>Open<br>**----- End of picture text -----**<br> *After over-temperature condition is removed, SSR can be reset by switching OFF the control input for more than 20 ms and switching back ON: this will switch ON the SSR output ## **Heatsink selection** Thermal resistance [°C/W] of RZ3..25 **==> picture [484 x 148] intentionally omitted <==** **----- Start of picture text -----**<br> Ambient temp. [°C]<br>Load current [A] Power dissipation [W]<br>20 30 40 50 60 70 80<br>25.0 0.44 0.34 0.23 0.12 0.01 - - 92<br>22.5 0.62 0.49 0.37 0.24 0.12 - - 80<br>20.0 0.84 0.69 0.54 0.40 0.25 0.10 - 68<br>17.5 1.12 0.95 0.78 0.60 0.43 0.25 0.08 58<br>15.0 1.51 1.30 1.09 0.88 0.67 0.46 0.25 47<br>12.5 2.06 1.80 1.54 1.27 1.01 0.75 0.48 38<br>10.0 2.75 2.40 2.06 1.72 1.37 1.03 0.69 29<br>7.5 3.83 3.35 2.87 2.39 1.91 1.43 0.96 21<br>5.0 6.01 5.26 4.51 3.76 3.01 2.25 1.50 13<br>2.5 12.62 11.04 9.46 7.89 6.31 4.73 3.15 6<br>**----- End of picture text -----**<br> **7** 24/05/2021 RZ3A DS ENG Carlo Gavazzi LTD **RZ3A** **==> picture [37 x 37] intentionally omitted <==** Thermal resistance [°C/W] of RZ3 ..55 **==> picture [484 x 173] intentionally omitted <==** **----- Start of picture text -----**<br> Ambient temp. [°C]<br>Load current [A] Power dissipation [W]<br>20 30 40 50 60 70 80<br>55.0 0.29 0.23 0.17 0.11 0.05 - - 164<br>50.0 0.36 0.29 0.22 0.16 0.09 0.02 - 148<br>45.0 0.44 0.36 0.29 0.21 0.14 0.06 - 133<br>40.0 0.54 0.46 0.37 0.29 0.20 0.12 0.03 118<br>35.0 0.67 0.58 0.48 0.38 0.28 0.19 0.09 103<br>30.0 0.85 0.74 0.62 0.51 0.39 0.28 0.16 87<br>25.0 1.10 0.96 0.82 0.68 0.55 0.41 0.27 73<br>20.0 1.38 1.21 1.04 0.87 0.69 0.52 0.35 58<br>15.0 1.85 1.62 1.39 1.16 0.93 0.70 0.46 43<br>10.0 2.80 2.45 2.10 1.75 1.40 1.05 0.70 29<br>5.0 5.62 4.92 4.21 3.51 2.81 2.11 1.40 14<br>2.5 11.26 9.85 8.45 7.04 5.63 4.22 2.82 7<br>**----- End of picture text -----**<br> ## Thermal resistance [°C/W] of RZ3 ..75 **==> picture [484 x 209] intentionally omitted <==** **----- Start of picture text -----**<br> Ambient temp. [°C]<br>Load current [A] Power dissipation [W]<br>20 30 40 50 60 70 80<br>75.0 0.27 0.22 0.17 0.12 0.07 0.02 - 201<br>70.0 0.32 0.27 0.21 0.16 0.10 0.05 - 184<br>65.0 0.38 0.32 0.26 0.20 0.14 0.08 0.02 167<br>60.0 0.44 0.38 0.31 0.25 0.18 0.11 0.05 151<br>55.0 0.52 0.45 0.38 0.30 0.23 0.16 0.08 136<br>50.0 0.62 0.54 0.45 0.37 0.29 0.21 0.12 121<br>45.0 0.74 0.64 0.55 0.46 0.36 0.27 0.17 106<br>40.0 0.87 0.76 0.65 0.54 0.43 0.32 0.22 92<br>35.0 1.01 0.89 0.76 0.63 0.51 0.38 0.25 79<br>30.0 1.21 1.06 0.91 0.76 0.60 0.45 0.30 66<br>25.0 1.49 1.30 1.11 0.93 0.74 0.56 0.37 54<br>20.0 1.90 1.67 1.43 1.19 0.95 0.71 0.48 42<br>15.0 2.60 2.28 1.95 1.63 1.30 0.98 0.65 31<br>10.0 4.01 3.51 3.01 2.51 2.01 1.50 1.00 20<br>5.0 8.24 7.21 6.18 5.15 4.12 3.09 2.06 10<br>**----- End of picture text -----**<br> ## **Alarm output specifications** |**Collector - emitter voltage**|35 VDC| |---|---| |**Emitter - collector voltage**|6 VDC| |**Collector current**|50 mA| |**Delay time on reset**|20 ms| **8** 24/05/2021 RZ3A DS ENG Carlo Gavazzi LTD **RZ3A** **==> picture [40 x 40] intentionally omitted <==** **Environmental specifications EU RoHS compliant** Yes **China RoHS** 25 The declaration in this section is prepared in compliance with People’s Republic of China Electronic Industry Standard SJ/ T11364-2014: Marking for the Restricted Use of Hazardous Substances in Electronic and Electrical Products. |**Part Name**|**Toxic or Harardous Substances and Elements**|**Toxic or Harardous Substances and Elements**|**Toxic or Harardous Substances and Elements**|**Toxic or Harardous Substances and Elements**|**Toxic or Harardous Substances and Elements**|**Toxic or Harardous Substances and Elements**| |---|---|---|---|---|---|---| ||Lead<br>(Pb)|Mercury<br>(Hg)|Cadmium<br>(Cd)|Hexavalent<br>Chromium<br>(Cr(Vl))|Polybrominat-<br>ed biphenyls<br>(PBB)|Polybromi-<br>nated diphenyl<br>ethers (PBDE)| |**Power Unit**<br>**Assembly**|x|O|O|O|O|O| |O: Indicates that said hazardous substance contained in homogeneous materials fot this part are below the limit<br>requirement of GB/T 26572.<br>X: Indicates that said hazardous substance contained in one of the homogeneous materials used for this part is above<br>the limit requirement of GB/T 26572.||||||| ## 这份申明根据中华人民共和国电子工业标准 SJ/T11364-2014：标注在电子电气产品中限定使用的有害物质 ||有毒或有害物质与元素|有毒或有害物质与元素|有毒或有害物质与元素|有毒或有害物质与元素|有毒或有害物质与元素|有毒或有害物质与元素| |---|---|---|---|---|---|---| |零件名称|铅<br>(Pb)|汞<br>(Hg)|镉<br>(Cd)|六价铬<br>(Cr(Vl))|多溴化联苯<br>(PBB)|多溴联苯醚<br>(PBDE)| |功率单元|x|O|O|O|O|O| |O:此零件所有材料中含有的该有害物低于GB/T 26572的限定。<br>X: 此零件某种材料中含有的该有害物高于GB/T 26572的限定。||||||| **9** 24/05/2021 RZ3A DS ENG Carlo Gavazzi LTD **RZ3A** **==> picture [37 x 37] intentionally omitted <==** ## **Short circuit protection** ## **Protection Co-ordination, Type 1 vs Type 2:** Type 1 protection implies that after a short circuit, the device under test will no longer be in a functioning state. In type 2 co-ordination the device under test will still be functional after the short circuit. In both cases, however the short circuit has to be interrupted. The fuse between enclosure and supply shall not open. The door or cover of the enclosure shall not be blown open. There shall be no damage to conductors or terminals and the condcutors shall not separate from terminals. There shall be no breakage or cracking of insulating bases to the extent that the integrity of the mounting of live parts is impaired. Discharge of parts or any risk of fire shall not occur. The product variants listed in the table hereunder are suitable for use on a circuit capable of delivering not more than 65,000 Arms Symmetrical Amperes 600 Volts maximum when protected by fuses. Tests at 65,000 A were performed with Class J fuses, fast acting; please refer to the table below for maximum allowed ampere rating of the fuse. Use fuses only. Tests with Class J fuses are representative of Class CC fuses. |**Protection co-ordination Type 1 according to UL 508**|**Protection co-ordination Type 1 according to UL 508**|**Protection co-ordination Type 1 according to UL 508**|**Protection co-ordination Type 1 according to UL 508**|**Protection co-ordination Type 1 according to UL 508**| |---|---|---|---|---| |**Part No.**|**Prospective short**<br>**circuit current**<br>**[kArms]**|**Max fuse size [A]**|**Class**|**Voltage [VAC]**| |RZ3A..25|65|30|CC|600| |RZ3A..55||50<br>30|J<br>CC|| |RZ3A..75||70|J|| |**Protection co-ordination Type 2 for fuses**|**Protection co-ordination Type 2 for fuses**|**Protection co-ordination Type 2 for fuses**|**Protection co-ordination Type 2 for fuses**|**Protection co-ordination Type 2 for fuses**|**Protection co-ordination Type 2 for fuses**|**Protection co-ordination Type 2 for fuses**| |---|---|---|---|---|---|---| |**Part No.**|**Prospective**|**Ferraz Shawmut(Mersen)**||||| ||**short circuit**<br>**current [kArms]**|**Max fuse**<br>**size [A]**|**Part number**|**Fuse**<br>**size**<br>**(mm)**|**Fuse holder**<br>**type**|**Voltage [VAC]**| |RZ3A..25|65|25<br>20|6.9 gRB 10-25<br>6.9gRB 10-20|10.3 x 38<br>10.3 x 38|CMS10 3P<br>CMS10 3P|400<br>600| |RZ3A..55||50<br>50|6.9xx CP gRC 14 x 51/50<br>6.9xx CPgRC 22 x 58/50|14 x 51<br>22 x 58|CMS14 3P<br>CMS22 3P|400<br>600| |RZ3A..75||63<br>63|6.9xx CP gRC 14 x 58/63<br>6.9xx CPgRC 22 x 58/63|22 x 58<br>22 x 58|CMS22 3P<br>CMS22 3P|400<br>600| **10** 24/05/2021 RZ3A DS ENG Carlo Gavazzi LTD **RZ3A** **==> picture [40 x 40] intentionally omitted <==** **==> picture [484 x 49] intentionally omitted <==** **----- Start of picture text -----**<br> Protection co-ordination Type 2 with Minature Circuit Breakers (M.C.B.s)<br>Solid State Relay ABB Model no. for Z ABB Model no. for B Wire cross sectional Minimum length of<br>type - type M. C. B. (rated - type M. C. B. (rated area [mm [2] ] Cu wire conductor<br>current) current) [m] [1]<br>**----- End of picture text -----**<br> |**Protection co-ordination Type 2 with Minature Circuit Breakers(M.C.B.s)**|**Protection co-ordination Type 2 with Minature Circuit Breakers(M.C.B.s)**|**Protection co-ordination Type 2 with Minature Circuit Breakers(M.C.B.s)**|**Protection co-ordination Type 2 with Minature Circuit Breakers(M.C.B.s)**|**Protection co-ordination Type 2 with Minature Circuit Breakers(M.C.B.s)**| |---|---|---|---|---| |**Solid State Relay**<br>**type**|**ABB Model no. for Z**<br>**- type M. C. B. (rated**<br>**current)**|**ABB Model no. for B**<br>**- type M. C. B. (rated**<br>**current)**|**Wire cross sectional**<br>**area [mm2]**|**Minimum length of**<br>**Cu wire conductor**<br>**[m]1**| |||||| |RZ3A..25|S203 - Z4 (4 A)<br>S203 - Z6 UC (6 A)|S203 - B2 (2 A)<br>S203 - B2 (2 A)|1.0<br>1.0<br>1.5|21.0<br>21.0<br>31.5| |RZ3A..55|S203 - Z10 (10 A)|S203 - B4 (4 A)|1.0<br>1.5<br>2.5|7.6<br>11.4<br>19.0| ||S203 - Z16 (16 A)|S203 - B6 (6 A)|1.0<br>1.5<br>2.5<br>4.0|5.2<br>7.8<br>13.0<br>20.8| ||S203 - Z20 (20 A)|S203 - B10 (10A)|1.5<br>2.5|12.6<br>21.0| ||S203 - Z25 (25 A)|S203 - B13 (13 A)|2.5<br>4.0|25.0<br>40.0| |RZ3A..75|S203 - Z20 (20 A)|S203 - B10 (10 A)|1.5<br>2.5<br>4.0|4.2<br>7.0<br>11.2| ||S203 - Z32 (32 A)|S203 - B16 (16 A)|2.5<br>4.0<br>6.0|13<br>20.8<br>31.2| ## 1. Between MCB and Load (including return path which goes back to the mains) Note: A prospective current of 6 kA and a 230 / 400 V power supply is assumed for the above suggested specifications. For cables with different cross section than those mentioned above please consult Carlo Gavazzi's Technical Support Group. **11** 24/05/2021 RZ3A DS ENG Carlo Gavazzi LTD **RZ3A** **==> picture [37 x 37] intentionally omitted <==** ## **Connection Diagrams** **==> picture [439 x 273] intentionally omitted <==** **----- Start of picture text -----**<br> A1 (~) (+) Regulation T1 B1 A1<br>ZC Output A B2 A2<br>L1<br>T2<br>Control B1 A1<br>Input ZC Output B<br>AC/DC B2 A2<br>L2<br>T3<br>ZC Output C<br>A2 (~) (-) L3 B1 A1<br>B1 (+) B2 A2<br>Alarm Over Temp<br>Output Circuit<br>B2 (-)<br>Logic<br>Input<br>Note: B1 and B2 applicable only to RZ3A..P<br>**----- End of picture text -----**<br> **Fig. 1** _Terminal wiring_ **Fig. 2** _Common alarm wiring_ ## **Connection specifications** **==> picture [484 x 151] intentionally omitted <==** **----- Start of picture text -----**<br> Relay<br>Mounting screws M5<br>Mounting torque ≤ 1.5 Nm<br>Control terminal<br>M4<br>Mounting screws<br>≤ 0.5 Nm<br>Mounting torque<br>Max: 2 x 2.5 mm [2] (AWG14)<br>Wire size<br>Min: 2 x 1 mm [2]<br>Power terminal<br>M5<br>Mounting screws<br>2.5 Nm<br>Mounting torque<br>Max: 2 x 6 mm [2] (AWG8)<br>Wire size<br>Min: 2 x 1 mm [2]<br>**----- End of picture text -----**<br> **12** 24/05/2021 RZ3A DS ENG Carlo Gavazzi LTD **RZ3A** ## **Alarm output connection** **==> picture [280 x 120] intentionally omitted <==** **----- Start of picture text -----**<br> Active Low Active High<br>VDC VDC<br>B1<br>B2<br>RZ3A..<br>Logic Input Logic Input<br>Alarm Output<br>**----- End of picture text -----**<br> COPYRIGHT ©2021 Content subject to change. Download the PDF: https://gavazziautomation.com **13** 24/05/2021 RZ3A DS ENG Carlo Gavazzi LTD
Updated at June 10, 2026
Founded in Milan in 1931, Carlo Gavazzi is a globally recognized leader in the design and manufacture of high-quality automation components. For nearly a century, the company has driven technological innovation in the industrial and building automation markets. With ISO 9001-certified production facilities across Europe and Asia, Carlo Gavazzi delivers state-of-the-art solutions tailored for demanding applications, including HVAC, renewable energy, semiconductor manufacturing, and electric vehicle charging infrastructure. Our extensive portfolio of Carlo Gavazzi components focuses heavily on their industry-leading switching and sensing technologies. We carry a comprehensive selection of solid state relays, contactors, and power relays engineered for exceptional reliability and thermal performance. Alongside these robust switching solutions, our range features a wide array of precision sensors, with a strong emphasis on proximity switches and light sensors that are critical for automated manufacturing processes, mobile equipment, and access control systems. Beyond core sensing and switching, the Carlo Gavazzi lineup extends into essential power management, circuit protection, and control devices. This includes highly efficient AC/DC converters, thermal magnetic circuit breakers, and advanced panel instrumentation designed to monitor and optimize energy efficiency. From current sensing transformers to motor starters, engineers consistently trust Carlo Gavazzi to provide competitive, dependable, and forward-thinking components for their most complex automation challenges.
About Novapart
Novapart is a B2B electronic component broker specialising in stock shortages and cost reduction. We source hard-to-find parts and identify compliant alternatives across a catalogue of 540,000+ components from 500+ manufacturers.
Learn more →Stock Shortage Specialist
When a component is unavailable, discontinued or has an unacceptable lead time, we tap into our network of vetted European and Asian distributors to source what you need — without compromising on quality or traceability.
Request a quote →Compliant Alternatives
We identify pin-to-pin, electrically equivalent substitutes that meet the same certifications (RoHS, AEC-Q100, REACH) as your original specification — validated against datasheets, not just part numbers. Often at a lower cost.
BOM Analysis service →