Name: Schneider Electric LAD8N20 Auxiliary Contact Block - INOSAKI
SKU: Schneider-LAD8N20
Price: 11.94 USD
Availability: InStock

Technical Overview

Side-mounted instantaneous contact block featuring 2 NO poles, 690V AC rating, 10A conventional thermal current, and screw clamp terminal connections.

Key Features

Instantaneous auxiliary contact operation with 2 NO pole composition
Side clip-on mounting for space-saving integration onto TeSys D/Deca contactors
High conventional free air thermal current of 10 A at 60 °C
IP20 ingress protection conforming to IEC 60529
Extremely high mechanical durability of 30 million cycles
Minimum switching capability of 5 mA at 17 V
Complies with global standards: EN/IEC 60947-5-1, UL 60947-5-1, and CSA C22.2 No 60947-5-1

Technical Specification Matrix

Parameter	Value
Range Compatibility	TeSys Deca (LC1D09...95 AC coil, LC1D40A...80A AC coil, LC1D115/150, CAD AC coil), TeSys F LC1F
Poles Contact Composition	2 NO
Mounting Location	Side
Rated Operational Voltage [Ue]	690 V AC 25...400 Hz
Rated Insulation Voltage [Ui]	690 V conforming to IEC 60947-5-1, 600 V conforming to UL/CSA
Conventional Free Air Thermal Current [Ith]	10 A at 60 °C
Minimum Switching Current	5 mA
Minimum Switching Voltage	17 V
Mechanical Durability	30,000,000 cycles
IP Rating	IP20 conforming to IEC 60529
Tightening Torque	1.7 N.m
Permissible Short-time Rating	100 A (1 s), 120 A (500 ms), 140 A (100 ms)
Physical Weight (kg)	0.06
Dimensions L x W x H (cm)	7.6 x 1.25 x 7.6

Industrial Applications

1. Contactor Status Feedback in PLC Control Loops

Uses the 2 NO contacts to provide remote status tracking of power contactors to a PLC. Because of its side-mounting design, it doesn't take up front-panel depth, and its minimum switching current of 5mA at 17V ensures highly reliable digital signaling to PLC input cards.

Problem Solved

Eliminates signaling blind spots by providing secondary verification of the primary contactor's physical state without increasing the enclosure depth.

PLC InputStatus FeedbackTeSys DecaLow-Current Switching

2. Industrial Motor Interlocking Circuits

Provides electrical interlocking between two forward/reverse or star-delta motor starters. The 2 NO contacts are integrated into control logic to prevent simultaneous coil energization of conflicting contactors, operating up to 690V AC in demanding motor control centers.

Problem Solved

Prevents phase-to-phase short circuits by ensuring a hardware-level interlock is maintained reliably, backed by a mechanical durability of 30 million cycles.

Electrical InterlockingStar-Delta StarterMotor Control CenterInstantaneous Operation

3. Auxiliary Signaling in Heavy-Duty Process Systems

Operates local signaling lamps or alarm buzzers in control panels (up to 120 V AC-15 / 6 A) to indicate a running state. It features a conventional free-air thermal current of 10A and a permissible short-time rating up to 140A for 100ms, handling inductive inrush currents of large signaling devices easily.

Problem Solved

Safely switches high-inrush auxiliary signaling devices without taxing the main controller, preventing contact welding during power-up.

Inrush CurrentPilot LightsScrew Clamp TerminalsConventional Thermal Current