2RRE45 Industrial Relay Module: Comprehensive Guide for PLC Automation Systems

29 de enero de 2026

Historical parts record: Photos and notes below belong to this record. Confirm the offered unit’s full model, condition and available test evidence before ordering.

The listing title calls this a relay module — it is not. The 2RRE45 is an ECOFIT backward-curved centrifugal blower: a 250 mm impeller with 56 mm wide blades on an external-rotor motor, rated 230 V 50/60 Hz at 0.83 A (190/269 W) and 2700/2830 rpm, insulation class F to 400 V, thermally protected, IP44. New with the run capacitor bundled alongside, received 2026-01-29, 3 kg packed, 1-year warranty.

What the nameplate says

Item	Value on label
Model	2RRE45, 250×56 R
Brand	ECOFIT (Thermally Protected)
Supply	230 V, 50/60 Hz, 0.83 A
Power / speed	190/269 W, 2700/2830 rpm (dual winding)
Max current	Imax 1.18/1.54 A
Insulation	CL. F, 400 V
Protection	IP44, thermal protection built in
Batch	(H06-17), December 2024

ECOFIT 2RRE45 blower full view — The blower as delivered: silver inlet ring over the backward-curved impeller, external-rotor motor at the hub, lead and run capacitor alongside.

2RRE45 nameplate — Nameplate close-up: ECOFIT, 2RRE45 250x56R, 230V 50/60Hz 0.83A, 190/269W, 2700/2830 RPM, CL.F 400V, IP44, Thermally Protected, batch (H06-17) 12-2024.

2RRE45 second label view — The same label from the intake side — 190/259 Wa, 2700/3030 RPM, Imax 1,18/1,54 A, batch 12-12-0211 also visible.

Video: the blower turned on the bench — impeller, motor plate and leads in turn.

Impeller and inlet

2RRE45 inlet side — The inlet side: the pressed inlet ring's dimpled tabs lock it to the impeller shroud — no fasteners.

2RRE45 leads — Lead end: four wires stripped free — yellow-green earth, blue and brown line, black neutral — with the blue band marking the sheath.

2RRE45 motor plate marking — The motor plate legend molded into the housing: Yellow-Green earth, Blue L, Brown L, Black N, and "Depth of screw max. 6mm" for the mounting screws — do not overtighten into the winding space.

2RRE45 back view — From the back: the motor can behind the impeller hub, cable gland at the bottom, capacitor tied alongside.

Fitting notes

This is the bare impeller-and-motor unit — it bolts into a scroll housing or a fan wall; the airflow figure depends on the housing you pair it with. Mount through the motor face at max 6 mm screw depth, keep the capacitor clear of the airstream, and mind the two-speed winding: the low and high taps deliver 190 W and 269 W at different currents, so size the breaker on Imax, not the running figure. The thermal protector opens the circuit if the winding overheats — if it trips repeatedly, check for blocked inlet rather than replacing the motor first.