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Schneider Electric REL21705 — General Purpose Relays

Schneider Electric REL21705

MPNREL21705
Obsolete

P127 voltage/current - Ion 1A 0.1-40Ion - IEC 60870-5-103 + 5 digital inputs

$3,749.61Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

REL21705 — Mechanical
ParameterValue
Width103 mm
HeightTotal: 177 mm Embedded: 157.5 mm
DepthTotal : 270 mm Embedded : 240 mm
REL21705 — Other specifications
ParameterValue
Device mountingFlush
Protection typeANSI 50/51 : overcurrent ANSI 79 : recloser Cold load pick-up ANSI 50G/51G : earth fault ANSI 86 : lockout ANSI 47 : negative sequence overvoltage ANSI 27 : undervoltage ANSI 59 : overvoltage ANSI 81R : rate of change of frequency ANSI 59N : neutral voltage displacement ANSI 49RMS : thermal overload protection ANSI 81L : underfrequency ANSI 37 : phase undercurrent ANSI 46 : negative sequence overcurrent ANSI 67N : directional earth fault ANSI 67W : earth fault wattmetric ANSI 81O : overfrequency ANSI 62/50BF : breaker failure ANSI 64 : restricted earth fault ANSI 67P : directional phase overcurrent ANSI 51V : voltage-restrained overcurrent
I/O channels4 current input CT...X/5 A and X/1 A 3 voltage 12 discrete
Discrete input voltage24...250 V DC 19.2 V standard variant 48...250 V AC 19.2 V standard variant 48...250 V DC 105 V further option 48...250 V DC 77 V further option 48...250 V DC 154 V further option 48...240 V AC 105 V further option 48...240 V AC 77 V further option 48...240 V AC 154 V further option
Switchgear diagnosis typeTrip circuit supervision ANSI code: TCS CT supervision ANSI code: CTS VT supervision ANSI code: VTS
Supply voltage24...250 V DC 19.2...300 V 48...250 V DC 38.4...300 V 48...240 V AC 38.4...264 V
Communication port supportRS485 RS232
Communication port protocolIEC 60870-5-103 Modbus RTU DNP3
Control and monitoring typeCircuit breaker/contactor control
Network and machine diagnosis typeFault recording Event recording Disturbance recording15 s
MPN
REL21705