Proax
CADEN
0 Items
Products
Manufacturers
Expertise
About UsBlogQuick OrderContact UsClearance
proax logo
Cart
Phoenix Contact 2700357
AllRelaysSafety Relays

2700357

Phoenix ContactOfficial Distributor

By Phoenix Contact

SKU
PHX2700357
MPN
PSR-PS21-1NO-1NC-24DC-SC
Weight
0.16 kg
This product is Not Cancellable/Not Returnable
Series PSR-PS

PSR-PS21-1NO-1NC-24DC-SC - Coupling relay

Coupling relay for SIL 2 high- and low-demand applications, couples digital output signals to the I/O, 1 enabling current path, 1 confirmation current path, 1 digital signal output, safe state off applications, test pulse filter, fixed screw terminal block

  • Up to SIL 2 according to IEC 61508
  • Force-guided contacts in accordance with EN 50205
  • Easy proof test according to IEC 61508 thanks to integrated signal contact
  • Approved for Class I, Zone 2 applications
  • Low housing width of just 6.8 mm
  • Long service life thanks to filtering of controller test pulses
  • 1 enabling current path, 1 digital signal output, 1 diagnostic current path
  • Couples digital output signals from failsafe controllers to I/O devices (valves, etc.) for electrical isolation and power adaptation
  • Corrosion protection through protective coating on the PCB
Technical Specifications

Utilization restriction

CCCex noteUse in potentially explosive areas is not permitted in China.

Product properties

Product familyPSRmini
ApplicationSafe switch off
ApplicationHigh demand
ApplicationLow demand
ApplicationEx
Relay typeElectromechanical relay with force-guided contacts in accordance with IEC/EN 61810-3

Times

Typ. starting time with Us< 100 ms (with Us when controlled via A1)
Typical release time< 35 ms (when controlled via A1)
Recovery time500 ms

Electrical properties

Maximum power dissipation for nominal condition2.35 W (IL² = 36 A²)
Nominal operating mode100% operating factor

Air clearances and creepage distances between the power circuits

Rated Insulation Voltage250 V AC
Rated surge voltage/insulationSafe isolation, 6 kV reinforced insulation from control circuit, start circuit, confirmation current path, signal output to the enabling current path; 4 kV/basic insulation between all current paths and housing

Supply

DesignationA1/A2
Rated control circuit supply voltage US20.4 V DC ... 26.4 V DC
Rated control circuit supply voltage US24 V DC -15 % / +10 %
Rated control supply current IStyp. 45 mA
Power consumption at UStyp. 1.08 W
Inrush Currenttyp. 400 mA (Δt < 10 µs at Us)
Filter timemax. 2 ms (at A1-A2; test pulse width)
Filter time≥ 100 ms (at A1-A2; test pulse rate)
Protective circuitSerial protection against polarity reversal; Suppressor diode 33 V
Designation21/A2
Diagnostic supply voltage UD24 V DC -15 % / +10 %
Input current at UD6 mA (at 21-A2 for UD; depending on load + 100 mA at M1 and 22)
Inrush current at UDtyp. 2.5 A (Δt < 20 µs at UD)
Protective circuitSerial protection against polarity reversal; Suppressor diode 38 V

Relay: Enabling current path (13/14)

Output description1 N/O contact, without delay, floating
Number of Outputs1 (safety-related)
Contact switching type1 enabling current path
Contact MaterialAgSnO2
Switching voltagemin. 12 V AC/DC
Switching voltagemax. 250 V AC/DC
Switching capacitymin. 60 mW
Inrush Currentmin. 3 mA
Inrush Currentmax. 6 A
Switching capacity in accordance with IEC 60947-5-14 A (24 V (DC13))
Switching capacity in accordance with IEC 60947-5-15 A (250 V (AC15))
Limiting Continuous Current6 A (High demand)
Limiting Continuous Current4 A (Low demand)
Sq. Total current36 A2 (observe derating)
Switching frequencymax. 1 Hz
Mechanical service life10x 10⁶ cycles
Output fuse6 A gL/gG
Output fuse4 A gL/gG (for low-demand applications)

Relay: Confirmation current path (21/22)

Output description1 N/C contact, without delay, not floating (reference ground: A2)
Number of Outputs1 (safety-related)
Contact switching type1 confirmation current path
Contact MaterialAgCuNi, + Au
Switching voltagemin. 20.4 V DC
Switching voltagemax. 26.4 V DC
Switching capacitymin. 20 mW
Inrush Currentmin. 1 mA
Inrush Currentmax. 100 mA
Limiting Continuous Current100 mA
Switching frequencymax. 1 Hz
Mechanical service life10x 10⁶ cycles
Output fuse150 mA Fast-blow

Signal: M1

Output descriptionPNP
Number of Outputs1 (non-safety-related)
Voltageapprox. 22 V DC (UD - 2 V)
Currentmax. 100 mA
Maximum Inrush Current500 mA (Δt = 1 ms at Us)
Short-circuit protectionno
Output fuse150 mA fast blow

Connection technology

pluggableno

Conductor connection

Connection MethodScrew connection
Conductor cross section rigid0.2 mm² ... 2.5 mm²
Conductor cross section flexible0.2 mm² ... 2.5 mm²
Conductor cross-section AWG26 ... 12
Stripping length12 mm
Screw threadM3
Tightening torque0.5 Nm ... 0.6 Nm

Signaling

Status display2 x green LEDs
Operating voltage display1 x yellow LED
Error indication1 x red LED

Dimensions

Width6.8 mm
Height93.1 mm
Depth102.5 mm

Material specifications

Color (Housing)yellow (RAL 1018)
Housing MaterialPBT

Safety data

Stop category0

Safety data: EN 50156

Safety Integrity Level (SIL)2

Safety data: IEC 61508 - High demand

Safety Integrity Level (SIL)2

Safety data: IEC 61508 - Low demand

Safety Integrity Level (SIL)2

Ambient conditions

Degree of ProtectionIP20
Min. degree of protection of inst. locationIP54
Ambient Temperature (Operation)-40 °C ... 65 °C (observe derating)
Ambient temperature (storage/transport)-40 °C ... 85 °C
Maximum altitude≤ 2000 m (Above sea level)
Max. permissible humidity (storage/transport)75 % (on average, 85% infrequently, non-condensing)
Max. permissible relative humidity (operation)75 % (on average, 85% infrequently, non-condensing)
Shock15g
Vibration (Operation)10 Hz ... 150 Hz, 2g

ATEX

Identification II 3G  Ex ec nC IIC T4 Gc
CertificateUL 22 ATEX 2912X

IECEx

IdentificationEx ec nC IIC T4 Gc
CertificateIECEx UL 22.0037X

UL, USA/Canada

IdentificationcULus
CertificateE140324

UL Ex, USA / Canada

IdentificationClass I, Zone 2, AEx ec nC IIC T4 / Ex ec nC IIC Gc T4 X
IdentificationClass I, Div. 2, Groups A, B, C, D, T4
CertificateE360692

CE

IdentificationCE-compliant

Environmental simulation test

IdentificationG3
CertificateISA-S71.04

CCC / China-Ex

IdentificationEx ec nC IIC T4 Gc
Certificate2022122304115695

DNV

IdentificationC, EMC2
Certificate11253-14 HH

Air clearances and creepage distances between the power circuits

Standards/regulationsEN 60664-1, EN 60079-7, EN 60079-15

Mounting

Mounting TypeDIN rail mounting
Assembly instructionsSee derating curve
Mounting Positionvertical, horizontal, with front of module upward
Accessories
  • Phoenix Contact0808710
    0808710
    Zack Marker strip, flat - ZBF 6:UNBEDRUCKT

Why Proax for Phoenix Contact 2700357?

Proax is an authorized distributor of Phoenix Contact 2700357 and one of Phoenix Contact's largest distributors in North America. Our highly skilled in-house technical team is ready to assist with any technical needs.

Have a question in mind? to help you get the right product as quickly as possible for your project. We're always here to help!

Short Lead Time
Highly Trained Staff
Live Chat
Technical Support
Local Inventory
60+ Years Experience
Additional Information
Pack Size1
Recommended
  • Phoenix Contact2700356
    2700356
    PSR-PS20-1NO-1NC-24DC-SC - Coupling relay for SIL 3 high and low-demand applications, couples digital output signals to the I/O, 1 enabling current path, 1 confirmation current path, 1 digital signal output, safe state off applications, test pulse filter, fixed screw terminal block
  • Phoenix Contact2702524
    2702524
    PSR-PS22-1NO-1NC-24VDC-SC - Coupling relay for SIL 3 high and low-demand applications, couples digital output signals to the I/O, 1 enabling current path, 1 confirmation current path, safe state off applications, test pulse filter, fixed screw terminal block
  • Phoenix Contact2702663
    2702663
    PSR-PS23-1NO-1NC-24VDC-SC - Coupling relay for SIL 3 high and low-demand applications, couples digital output signals to the I/O, 1 enabling current path, 1 confirmation current path, safe state off applications, test pulse filter, fixed screw terminal block
  • Phoenix Contact2700398
    2700398
    PSR-PS40-1NO-1DO-24DC-SC - Coupling relay for SIL 3 high- and low-demand applications, couples digital output signals to the I/O, 1 enabling current path, 1 digital signal output, safe state off applications, test pulse filter, fixed screw terminal block

Not in stock

Request lead time or order—we'll ensure quick delivery

Phoenix Contact Availability