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Schneider Electric LA1LB021 — Motor Control Accessories

Schneider LA1LB021 TeSys Auxiliary Contact Block

MPNLA1LB021
Obsolete

Schneider Electric TeSys LA1LB021 auxiliary contact block, 4 NO + 1 NC instantaneous contacts, screw-clamp terminals, 10 A conventional free air thermal current, 690 V rated insulation voltage.

$286.32Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LA1LB021 — Identification
ParameterValue
Product / component typeAuxiliary contact
Product rangeTeSys
LA1LB021 — Cable & Connector
ParameterValue
Terminal connection capacity2 screw clamps terminals 0.002 in² (1 mm²) 2 screw clamps terminals 0.004 in² (2.5 mm²)
LA1LB021 — Other specifications
ParameterValue
Making capacity1500 VA 48 V AC AC-15) 220 W 440 V DC DC-13) 260 W 220 V DC DC-13) 3500 VA 110...127 V AC AC-15) 400 W 110 V DC DC-13) 6000 VA 220...240 V AC AC-15) 700 W 48 V DC DC-13) 7000 VA 440 V AC AC-15) 7500 VA 380...415 V AC AC-15) 800 W 24 V DC DC-13)
Device short nameLA1LB
Auxiliary contacts typeInstantaneous 2 NO + 1 NC) contactor state Instantaneous 2 NO) control knob in any position other than auto
Switching capacity in0.6 VA >= 17 V 0.01 A
Rated operational power in120 W 24 V DC-13 1000000 cycles 150 W 48 V DC-13 1500000 cycles 28 W 440 V DC-13 1500000 cycles 33 W 220 V DC-13 1500000 cycles 38 W 110 V DC-13 1500000 cycles 61 W 440 V DC-13 1000000 cycles 68 W 220 V DC-13 1000000 cycles 70 W 24 V DC-13 1500000 cycles 75 W 110 V DC-13 1000000 cycles 90 W 48 V DC-13 1000000 cycles
Voltage690 V IEC 60947-5-1
[Ith] conventional free air thermal current10 A

Product details

What the 4 NO + 1 NC contact stack buys you

The LA1LB021 is a TeSys auxiliary contact block with four normally-open and one normally-closed instantaneous contacts — enough to mirror the contactor state across five separate control circuits without daisy-chaining multiple blocks.

Switching capacity — where the numbers matter

In AC-15 duty (solenoid loads), the block switches 600 VA at 220–240 V and 300 VA at 110–127 V, both for 1.5 million cycles — the endurance ceiling for a contactor auxiliary that cycles with every motor start. DC-13 ratings cover the inductive break: 120 W at 24 V and 68 W at 220 V, each good for 1 million cycles. The making capacity peaks at 8000 VA on 24 V DC and 7500 VA on 380–415 V AC — the inrush a pilot light or PLC input sees when the contactor pulls in.

Lifecycle reality — obsolete, but findable

Schneider lists this part as obsolete. For a line-down situation or a BOM that still carries the LA1LB021, the part is available through independent surplus and broker channels.

MPN
LA1LB021