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Schneider Electric LRD3353A66 — Overload Relays

Schneider LRD3353A66 TeSys Deca Overload Relay, 23-32 A, Obs

MPNLRD3353A66
Obsolete

Schneider Electric TeSys Deca LRD3353A66 differential thermal overload relay, 23-32 A adjustment range, Class 10A, 1000 V AC, obsolete.

$205.39Ref. price · indicative, final on quote
Schneider Electric LRD3353A66 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LRD3353A66 — Mechanical
ParameterValue
Width70 mm
Height81 mm
Depth115 mm

Product details

It's now listed as obsolete by the manufacturer.

The 23-32 A thermal protection adjustment range sets the motor full-load current where the relay starts its thermal model. Phase failure sensitivity is set to trip at 130% of Ir on two phases when the third drops to zero — that catches a lost phase before the motor single-phases to failure. Rated insulation voltage is 1000 V for the power circuit per IEC 60947-4-1, with a 600 V UL/CSA rating, so it's fine for 480 V and 600 V class systems. The 6 kV impulse withstand covers transient spikes on industrial networks.

Approved to EN/IEC 60947-4-1 and 60947-5-1, UL 60947-4-1 and 60947-5-1, CSA C22.2 No 60947-4-1 and 60947-5-1, and GB/T 14048.4 and 14048.5. Flame retardance is V1 per UL 94. IP20 finger-safe enclosure for panel mounting.

Frequently asked questions

What replaces the LRD3353A66?

No official successor order code is provided in the available records. A parametric search within the TeSys range for a 23-32 A Class 10A differential relay is the practical path, but pin-for-pin compatibility must be verified against the existing panel wiring.

What is the LRD3353A66's depth?

The depth is 115 mm.

What range does the LRD3353A66 belong to?

It belongs to the TeSys range, specifically the TeSys Deca series of differential thermal overload relays.

What compliance documentation does this part carry?

It carries approvals per EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, UL 60947-5-1, CSA C22.2 No 60947-4-1, CSA C22.2 No 60947-5-1, and GB/T 14048.4 and 14048.5. Flame retardance is V1 per UL 94.

MPN
LRD3353A66