Schneider Electric LADN31 TeSys Deca Auxiliary Contact Block 3NO + 1NC, 10A, Front Mounting

MPN: LADN31
PPN: SCH-LADN31

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Description

TeSys Deca instantaneous auxiliary contact block, for contactors LC1D, LC1F and control relays CAD. It provides 3NO+1NC contacts (NC mirror certified) rated up to 10A/690V AC, connection by screw clamp terminals. Clip-on front mounting, it procures high reliability and durability. TeSys Deca contactors have been designed for perfect integration into control systems. Multi standards certified (IEC, UL, CSA, CCC, EAC). TeSys Deca contactors offer quick simple setup, while maintaining a compact size. Contactors have both horsepower and Kw motor rating for international acceptance. An extennsive line of accessories makes it easy to meet the requirements of most applications. These contactors have UL, CSA, GOST, RINA, BV, CCC, DNV, GL, LROS certifications.

Features

The Schneider Electric TeSys LADN31 is a high-performance auxiliary contact block designed to snap directly onto the front of a TeSys D contactor or control relay. It provides an immediate expansion of your control circuit capacity, allowing you to trigger additional signaling, interlocking, or status-monitoring functions without the need for separate, bulky relays.
his unit features a 3NO + 1NC (3 Normally Open / 1 Normally Closed) configuration. This specific arrangement is ideal for complex Canadian industrial control schemes where multiple "Open" signals are needed for PLC inputs or indicator lights, while the single "Closed" contact provides a dedicated safety interlock or "ready" status loop.
Engineered for rapid deployment, the LADN31 utilizes a tool-free, snap-on mounting system. It mounts centrally on the front of LC1D contactors, maintaining a compact depth profile that is essential for high-density DIN-rail layouts in crowded automation cabinets and motor control centers (MCCs).
Featuring high-integrity serrated sliding contacts, this block ensures a reliable electrical connection even in dusty industrial environments. It is rated for a minimum switching capacity of 5mA at 17V, making it a "PLC-ready" solution that prevents signal loss or "ghosting" when interfacing with sensitive electronic controllers.
Built to the rigorous standards of the TeSys D range, this auxiliary block is designed for millions of mechanical operations. Its robust construction ensures that your control feedback remains accurate and responsive, even in high-speed Canadian manufacturing, packaging, or HVAC applications where equipment cycles frequently.

Documentation & Downloads

Specifications

Key Specifications

Country of Origin	Czechia, France, Indonesia, United States

Depth	42 mm

Physical Attributes

Color	dark grey

Complementary Attributes

Irms Rated Making Capacity	140 A AC conforming to IEC 60947-5-1250 A DC conforming to IEC 60947-5-1
Minimum Switching Voltage	17 V

Minimum Switching Current	5 mA

Important Information Attributes

Persona Type Ids	EU, LC, OM, OM8, PB, SI
Market Segmentation Id	COMMERCIAL, INDUSTRIAL
Range	TeSys, TeSys Deca
Certificate Agency	CB Scheme, UL, CSA, CCC, EAC, UKCA
[Ui] Rated Insulation Voltage	690 V IEC 60947-5-1600 V UL, 600 V CSA
Non-overlap Time	1.5 ms on de-energisation no overlap between NC and NO contact, 1.5 ms on energisation no overlap between NC and NO contact
Carbon Footprint Of The End-of-life Phase [C1 To C4]	0.2 kg CO2 eq., 0.15462428493948835
Carbon Footprint Of The Manufacturing Phase [A1 To A3]	0.4 kg CO2 eq., 0.41771858290220826
Local Data Status	Publishable
Return Indicator	Y
Stock Policy	1
Traceability	No
Use Carbon Footprint	4.7409
Weee Product Category	5
Eoli Availability Display	No need of specific recycling operations
Reach Full Compliance Status Id	NOT_CONTAINING_SVHC
Rohs Eur In Scope	Yes
Rohs Eur Conformity Date	1929
China Rohs In Scope	No
With Recycled Cardboard	Yes
Product Contributes To Saved And Avoided Emissions	No
Tier	1
Function Option	Standard
Device Short Name	LADN
Insulation Resistance	> 10 MOhm> 10 MOhm
Mounting Location	front
Product Availability	Stock - Normally stocked in distribution facility
Product Or Component Type	auxiliary contact block
Protective Treatment	TH IEC 60068
Returnability	Yes
Software Version	v5.9.4
Total Lifecycle Carbon Footprint	5 kg CO2 eq.
Pole Contact Comp	3 NO + 1 NC
Database Version	2022-01
Pcr Version	PEP-PCR-ed4-2021 09 06
Type Of Verification For The Pep	Independent internal review
Functional-unit Description	To add instantaneous auxiliary contact blocks in front face on TeSys k contactors as NO and NC contacts for 20 years.
Functional-unit Unit	unit
Energy Model - Manufacturing [A1-a3]	Electricity Mix; Production mix; Low voltage; FR
Energy Model - Use [B6]	Electricity Mix; Production mix; Low voltage; FR
Recyclability Potential In %	39
Width Nominal	44 mm
[Ue] Rated Operational Voltage	690 V AC 25...400 Hz
Nbr. Of Units In Pkg.	1
Take-back	No
Climate Change - Fossil Fuels ( Kg Co2 Eq.) Operational Energy Use [B6]	4.7286
Depletion Of Abiotic Resources - Fossil Fuels (Mj) Operational Energy Use [B6]	910.365
Total Use Of Renewable Primary Energy Resources (Primary Energy And Primary Energy Resources Used As Raw Materials) (Mj) Operational Energy Use [B6]	84.1665
Use Of Renewable Primary Energy Excluding Renewable Primary Energy Resources Used As Raw Materials (Mj) Operational Energy Use [B6]	84.1665

Persona Type Names	End User, Contractor, Original Equipment Manufacturer, OEM - Control Panelbuilder, Panel Builder, System Integrator
Market Segmentation	Commercial, Industrial
Tightening Torque	1.7 N.m flat Ø 6 mm, 1.7 N.m Philips No 2, 1.7 N.m pozidriv No 2
[Ie] Rated Operational Current	6 A at 120 V AC-151.04 A at 690 V AC-15, 0.55 A at 125 V DC-130.1 A at 600 V DC-13
Connections - Terminals	screw clamp terminals 2 1-4 mm²flexible without cable endscrew clamp terminals 2 1-4 mm²rigid without cable endscrew clamp terminals 1 1-4 mm²flexible with cable end, screw clamp terminals 1 1-4 mm²flexible without cable end, screw clamp terminals 2 1-2.5 mm²flexible with cable end, screw clamp terminals 1 1-4 mm²rigid without cable end
Carbon Footprint Of The Distribution Phase [A4]	0.06786586045038151, 0.1 kg CO2 eq.
Carbon Footprint Of The Installation Phase [A5]	0.008480726561347006, 0 kg CO2 eq.
Carbon Footprint Of The Use Phase [B2 B3 B4 B6]	5 kg CO2 eq., 4.7409
Local Publishable Date	2026-07-07
Stocking Flag	Y
Serviceability	No
Field Service Division	PPIBS
Weee Scope	In
Scope Perimeter	At least in Europe
Reach Full Compliance Status	Free of Substances of Very High Concern above the threshold
Reach Compliance Directive	Free of Substances of Very High Concern above the threshold
Rohs Eur Status	Compliant
Rohs Eur Full Compliance Status	Compliant
China Rohs Label	1
Without Single Use Plastic	Yes
Tier Id	1
Function Option Id	STANDARD
Product Kit Identifier	N
Environmental Characteristic	normal environment
Mechanical Durability	30 Mcycles
Pole Contact Composition	3 NO + 1 NC
Product Name	TeSys Deca
Protection Type	gG fuse 10 A
Range Of Product	TeSys Deca
Shielding Continuity Terminal	without
Sustainable Packaging	Yes
Weee Label	The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins.
Pep Code	ENVPEP1108007EN
Pep Verification Date	2025-06-17
Psr Version	PSR-0005-ed2-2016 03 29
Data Source	extrapolated product
Functional-unit Quantity	1
Reference Lifetime In Y	20
Energy Model - Installation [A5]	Electricity Mix; Production mix; Low voltage; FR
Energy Model - End Of Life [C1-c4]	Electricity Mix; Production mix; Low voltage; FR
Height Nominal	48 mm
[Ith] Conventional Free Air Thermal Current	10 A (at 60 °C)
Permissible Short-time Rating	100 A 60 °C 1 s120 A 60 °C 500 ms140 A 60 °C 100 ms
Package Weight(Lbs)	61 g
Warranty (In Months)	18
Climate Change - Total ( Kg Co2 Eq.) Operational Energy Use [B6]	4.7409
Total Use Of Primary Energy During The Life Cycle (Mj) Operational Energy Use [B6]	994.53
Use Of Non-renewable Primary Energy Excluding Non-renewable Primary Energy Resources Used As Raw Materials (Mj) Operational Energy Use [B6]	910.365
Customs Code	8536509065

Environment Attributes Main

China Rohs Regulation	Product out of China RoHS scope , Pro-active China RoHS declaration (out of China RoHS legal scope)
Ambient Air Temperature For Storage	-60-80 °C, -60-80 °C
Reach Free Shvc	Yes
Toxic Heavy Metal Free	Yes
Carbon Footprint	5.389589454853425
Eu Rohs Directive	Compliant
Operating Altitude	9842.52 ft (3000 m)
Packaging Without Single Use Plastic	Yes
Reach Regulation	Free of Substances of Very High Concern above the threshold
Pep Verification Date	2025-06-17
Psr Version	PSR-0005-ed2-2016 03 29

Ambient Air Temperature For Operation	-5-60 °C, -5-60 °C
Take Back	No
Recycled Metal Content At Cr Level	0 %
Mercury Free	Yes
Environmental Disclosure	ENVPEP1108007EN
Ip Degree Of Protection	IP2X conforming to IEC 60529
Packaging Made With Recycled Cardboard	Yes
Reach Free Of Svhc	Yes
Pep Code	ENVPEP1108007EN
Pcr Version	PEP-PCR-ed4-2021 09 06
Type Of Verification For The Pep	Independent internal review