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Siemens 3RF2120-1AA42

***phase-out type*** semiconductor relay, 1-phase 3RF2 width 22.5 mm, 20 A 24-230 V / 4-30 V DC screw terminal for mounting on available cooling surfaces

SiemensMFR # 3RF2120-1AA42SKU # CEY-8EF3B039579C

product brand nameSIRIUS

product designationsolid-state relay

design of the product1-pole

product type designation3RF21

product functionzero-point switching

power loss [V∙A] maximum28.6 V·A

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About This Product

***phase-out type*** semiconductor relay, 1-phase 3RF2 width 22.5 mm, 20 A 24-230 V / 4-30 V DC screw terminal for mounting on available cooling surfaces

Siemens 3RF2120-1AA42

Genuine, certified Siemens product
Fast sourcing through a worldwide supply network
Product selection and compatibility support from our technical team
Equivalent and alternative product suggestions
Quotation and lead time tailored to your request

Specifications

product brand nameSIRIUS

product designationsolid-state relay

design of the product1-pole

product type designation3RF21

_1 of the accessories that can be ordered3RF2900-3PA88

_2 of the accessories that can be ordered3RF2920-0HA13

_3 of the accessories that can be ordered3RF2900-0EA18

_4 of the accessories that can be ordered3RF2920-0GA13

_5 of the accessories that can be ordered3RF2920-0FA08

_1 of the accessories that can be orderedterminal cover

_2 of the accessories that can be orderedpower regulator

_3 of the accessories that can be orderedconverter

_4 of the accessories that can be orderedload monitoring

_5 of the accessories that can be orderedload monitoring, basis

General technical data

product functionzero-point switching

power loss [V∙A] maximum28.6 V·A

at AC in hot operating state28.6 W

at AC in hot operating state per pole28.6 W

without load current share typical0.5 W

insulation voltage rated value600 V

surge voltage resistance of main circuit rated value6 kV

protection class IPIP20

protection class IP on the front according to IEC 60529IP20

shock resistance according to IEC 60068-2-2715 g / 11 ms

vibration resistance according to IEC 60068-2-62 g

reference code according to IEC 81346-2Q

Substance Prohibitance (day/month/year)05/28/2009

SVHC substance nameLead CAS-No. 7439-92-1 Lead monoxide (lead oxide) CAS-No. 1317-36-8 2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one CAS-No. 71868-10-5 Melamine CAS-No. 108-78-1

Net Weight0.058 kg

Main circuit

number of poles for main current circuit1

number of NO contacts for main contacts1

number of NC contacts for main contacts0

type of voltage of the operating voltageAC

— at 50 Hz rated value24 ... 230 V

— at 60 Hz rated value24 ... 230 V

operating frequency rated value50 ... 60 Hz

relative symmetrical tolerance of the operating frequency10 %

at 50 Hz20 ... 253 V

at 60 Hz20 ... 253 V

operational current rated value maximum20 A

at AC-1 at 400 V rated value20 A

at AC-51 rated value20 A

according to UL 508 rated value20 A

ampacity maximum20 A

operational current minimum100 mA

rate of voltage rise at the thyristor for main contacts maximum permissible500 V/µs

blocking voltage at the thyristor for main contacts maximum permissible800 V

reverse current of the thyristor10 mA

derating temperature40 °C

surge current resistance rated value200 A

I2t value maximum200 A²·s

Control circuit/ Control

type of voltage of the control supply voltageDC

control supply voltage 1 at DC rated value maximum permissible30 V

control supply voltage 1 at DC4 ... 30 V

initial value for signal <1> detection4 V

full-scale value for signal<0> recognition1 V

at DC13 mA

control current at DC rated value15 mA

ON-delay time1 ms; additionally max. one half-wave

OFF-delay time1 ms; additionally max. one half-wave

Installation/ mounting/ dimensions

fastening method side-by-side mountingYes

fastening methodscrew fixing

design of the thread of the screw for securing the equipmentM4

tightening torque of fixing screw maximum1.5 N·m

tightening torque [lbf·in] of fixing screw maximum13 lbf·in

height85 mm

width22.5 mm

depth48 mm

Connections/ Terminals

product component removable terminal for auxiliary and control circuitYes

for main current circuitscrew-type terminals

for auxiliary and control circuitscrew-type terminals

— solid2x (1.5 ... 2.5 mm²), 2x (2.5 ... 6 mm²)

— finely stranded with core end processing2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²), 1x 10 mm²

for AWG cables for main contacts2x (14 ... 10)

solid or stranded1.5 ... 6 mm²

finely stranded with core end processing1 ... 10 mm²

— solid1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1 mm²)

— finely stranded with core end processing1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1 mm²)

— finely stranded without core end processing1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1 mm²)

for AWG cables for auxiliary and control contacts1x (20 ... 12)

AWG number as coded connectable conductor cross section for main contacts14 ... 10

for main contacts with screw-type terminals2 ... 2.5 N·m

for auxiliary and control contacts with screw-type terminals0.5 ... 0.6 N·m

for main contacts with screw-type terminals7 ... 10.3 lbf·in

for auxiliary and control contacts with screw-type terminals4.5 ... 5.3 lbf·in

for main contactsM4

of the auxiliary and control contactsM3

for main contacts10 mm

for auxiliary and control contacts7 mm

UL/CSA ratings

operational current according to UL 508 rated value20 A

Electrical Safety

touch protection on the front according to IEC 60529finger-safe, for vertical contact from the front

Ambient conditions

installation altitude at height above sea level maximum1 000 m

during operation-25 ... +60 °C

during storage-55 ... +80 °C

Electromagnetic compatibility

due to burst according to IEC 61000-4-42 kV / 5 kHz, behavior criterion 2

due to conductor-earth surge according to IEC 61000-4-52 kV, behavior criterion 2

due to conductor-conductor surge according to IEC 61000-4-51 kV, behavior criterion 2

due to high-frequency radiation according to IEC 61000-4-6140 dBuV in the frequency range 0.15 ... 80 MHz, behavior criterion 1

field-based interference according to IEC 61000-4-380 MHz ... 1 GHz 10 V/m, behavior criterion 1

electrostatic discharge according to IEC 61000-4-24 kV contact discharging / 8 kV air discharging, behavior criterion 2

conducted HF interference emissions according to CISPR11Class A for industrial environment

field-bound HF interference emission according to CISPR11Class B for the domestic, business and commercial environments

Short-circuit protection, design of the fuse link

of gS fuse for semiconductor protection at NH design usable3NE1814-0

of full range R fuse link for semiconductor protection at cylindrical design usable5SE1325

of back-up R fuse link for semiconductor protection at NH design usable3NE8015-1

of back-up R fuse link for semiconductor protection at cylindrical design 10 x 38 mm usable3NC1032

of back-up R fuse link for semiconductor protection at cylindrical design 14 x 51 mm usable3NC1430

of back-up R fuse link for semiconductor protection at cylindrical design 22 x 58 mm usable3NC2225

at NH design usable3NA6803; These fuses have a smaller rated current than the semiconductor relays

at NH design usable noteThese fuses have a smaller rated current than the semiconductor relays

at cylindrical design 10 x 38 mm usable3NW6001-1; These fuses have a smaller rated current than the semiconductor relays

at cylindrical design 10 x 38 mm usable noteThese fuses have a smaller rated current than the semiconductor relays

at cylindrical design 14 x 51 mm usable3NW6101-1; These fuses have a smaller rated current than the semiconductor relays

at cylindrical design 14 x 51 mm usable noteThese fuses have a smaller rated current than the semiconductor relays

of NEOZED fuse usable5SE2306; These fuses have a smaller rated current than the semiconductor relays

Accessories 7

Genuine accessories that can be used with the Siemens 3RF2120-1AA42 motor and are supplied separately are listed below. Click a code to open the accessory page and see the other compatible motors.

Part no	Description	Compatible motors
3RF2900-0EA18	Aksesuar
3RF2906-0FA08	Aksesuar
3RF2920-0FA08	Aksesuar
3RF2916-0JA16-1KK0	Aksesuar
3RF2920-0GA16	Aksesuar
3RF2932-0JA16	Aksesuar
3RF2932-0JA16-1KK0	Aksesuar