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Schneider Electric REL21701 — General Purpose Relays

Schneider REL21701 MiCOM P127 protection relay, 1 A, discontinued

MPNREL21701
Obsolete

Schneider REL21701 Micom And — now discontinued, supplied from remaining surplus and broker stock.

$3,749.61Ref. price · indicative, final on quote
Schneider Electric REL21701 datasheet (PDF)
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

REL21701 — Mechanical
ParameterValue
Width103 mm
HeightTotal: 177 mm Embedded: 157.5 mm
DepthTotal : 270 mm Embedded : 240 mm
REL21701 — 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 supportRS232 RS485
Communication port protocolDNP3 IEC 60870-5-103 Modbus RTU
Control and monitoring typeCircuit breaker/contactor control
Network and machine diagnosis typeFault recording Event recording Disturbance recording15 s

Product details

Overview

The REL21701 is a Schneider MiCOM P127 voltage/current protection relay rated for 1 A nominal current on a 250 V DC supply, with 4 current transformer inputs (X/5 A and X/1 A), 3 voltage transformer inputs, and 12 discrete inputs plus 9 discrete outputs. It supports DNP3, IEC 60870-5-103, and Modbus RTU protocols, and is flush-mounted in a 103.0 mm wide case with a total depth of 270 mm (embedded depth 240 mm).

Schneider discontinued the REL21701 on 2020-08-27; it is no longer in active production and must be sourced through surplus or broker channels.

MPN
REL21701