Product Description

Siemens 3KX3552-1YD Auxiliary Switch – 2NO + 2NC for Superswitch 3KL83/3KA83

The Siemens 3KX3552-1YD is an Auxiliary Switch with 2NO + 2NC contacts designed for compatible Siemens Superswitch 3KL83/3KA83 switch-disconnector configurations. Siemens accessory documentation lists 3KX3552-1YD specifically under Auxiliary Switch (2NO+2NC).

Important product-identification note: the supplied title says “Auxiliary switch (1NO+1NC)”, but Siemens documentation identifies the exact article 3KX3552-1YD as 2NO + 2NC. The corresponding 1NO + 1NC auxiliary switch for the same 3KL83/3KA83 family is 3KX3552-1YC.

For SB Smart, the product should therefore be listed accurately as Siemens 3KX3552-1YD Auxiliary Switch – 2NO + 2NC.

Siemens 3KX3552-1YD Auxiliary Switch

The 3KX3552-1YD is an auxiliary-contact accessory for Siemens Superswitch switch-disconnectors. Its auxiliary contacts change state according to the operating position of the associated main switching device, allowing the switch status to be used in a separate control or indication circuit.

Siemens identifies the article for the 3KL831/832/833/834 and 3KA831/832/834/835 switch families.

2NO + 2NC Contact Configuration

The exact 3KX3552-1YD provides:

• 2 Normally Open (NO) contacts

• 2 Normally Closed (NC) contacts

This gives four auxiliary contact functions that can be used for compatible:

• Switch-position indication

• Status signaling

• Control circuits

• Electrical interlocking

• Remote indication

• Monitoring circuits

The actual contact operation depends on the position of the associated Superswitch and the wiring arrangement.

Normally Open Contacts

The two NO contacts are open in their normal state and close when actuated by the associated switching mechanism.

They may be used for compatible:

• Switch-status indication

• Auxiliary control

• Remote signaling

• Panel indication

• Control-circuit logic

Normally Closed Contacts

The two NC contacts are closed in their normal state and open when actuated.

They may be used for:

• Interlocking circuits

• Status feedback

• Control logic

• Monitoring

• Auxiliary signaling

The specific circuit function depends on how the contacts are wired.

Designed for Superswitch 3KL83/3KA83

The 3KX3552-1YD is designed for the Siemens Superswitch family including:

• 3KL831

• 3KL832

• 3KL833

• 3KL834

• 3KA831

• 3KA832

• 3KA834

• 3KA835

Siemens accessory documentation groups these switch families under the 3KX3552-1YD auxiliary-switch article.

The exact installed switch-disconnector should be verified before procurement.

Auxiliary Signal from a Main Switch

An auxiliary switch allows the operating status of the main Superswitch to be represented electrically in another circuit.

A typical arrangement is:

Superswitch position → Auxiliary contacts change state → Indication/control circuit receives the signal

This can be useful where the switch status needs to be incorporated into a panel's control or indication scheme.

Control and Interlocking Applications

With 2NO + 2NC contacts, the 3KX3552-1YD offers more auxiliary contact points than the 1NO + 1NC version.

Suitable applications can include:

• Electrical interlocking

• Switch-position feedback

• Status indication

• Remote monitoring

• Control-circuit sequencing

• Panel signaling

The electrical ratings and wiring arrangement should be checked against the complete control circuit.

Difference Between 3KX3552-1YC and 3KX3552-1YD

These two articles are for the same Superswitch family but have different auxiliary-contact configurations:

3KX3552-1YC: 1NO + 1NC

3KX3552-1YD: 2NO + 2NC

Siemens lists both articles separately in its Superswitch accessory range.

Therefore, the 1YD version should not be described as a 1NO + 1NC auxiliary switch.

Compatibility by Superswitch Size

Siemens' accessory table shows the auxiliary-switch selection by Superswitch family:

This size-specific selection is important when purchasing replacement accessories.

Replacement Accessory

The 3KX3552-1YD can be used when an existing auxiliary switch on a compatible 3KL83/3KA83 Superswitch requires replacement or when additional auxiliary contacts are required.

Before ordering, verify:

• Exact Superswitch model

• Switch family

• Contact configuration

• Required number of NO contacts

• Required number of NC contacts

• Mechanical compatibility

• Electrical contact requirements

Selecting the exact article avoids replacing a 1NO+1NC accessory with a 2NO+2NC version or vice versa.

Industrial Electrical Applications

The 3KX3552-1YD can be relevant for compatible:

• Industrial distribution panels

• Low-voltage switchboards

• Superswitch assemblies

• Electrical control panels

• Power-distribution equipment

• Industrial machinery

• Switchgear maintenance

• Replacement applications

The accessory should be installed with its specified compatible Siemens Superswitch.

Siemens Superswitch Accessory Range

The 3KL8/3KA8 accessory range includes:

• Fuse covers

• Terminal covers

• Phase barriers

• Fuse-cover phase-barrier kits

• Auxiliary switches

• Auxiliary-switch covers

• Front drives and handles

The 3KX3552-1YD specifically belongs to the Auxiliary Switch (2NO+2NC) category for the 3KL83/3KA83 family.

Standard Package Quantity

Published Siemens-related pricing information lists the standard package quantity for 3KX3552-1YD as 1 piece.

This makes it suitable for individual replacement and maintenance procurement.

Suitable for Electrical Panel Builders and Industrial Buyers

The Siemens 3KX3552-1YD is relevant for:

• Electrical panel builders

• Industrial buyers

• Maintenance departments

• Electrical contractors

• Switchgear assemblers

• Electrical product dealers

• Replacement-part procurement

For SB Smart, the product is positioned around industrial electrical product supply and procurement, without claiming automation integration or automation-service work.

Key Features

• Siemens Superswitch 3KL8/3KA8 accessory

• Article number 3KX3552-1YD

• Auxiliary Switch

• 2NO + 2NC

• Compatible with 3KL831/832/833/834

• Compatible with 3KA831/832/834/835

• Suitable for switch-position indication

• Suitable for control and monitoring circuits

• Suitable for electrical interlocking

• Standard package quantity: 1 piece

Benefits

• 2NO + 2NC contacts: Provides four auxiliary contact functions.

• Superswitch compatibility: Designed for the 3KL83/3KA83 family.

• More contact capacity: Provides twice the auxiliary-contact count of the 1NO+1NC version.

• Status indication: Supports electrical representation of switch status.

• Control flexibility: Useful for compatible control and monitoring circuits.

• Interlocking support: Suitable for suitable electrical interlocking arrangements.

• Replacement friendly: Useful for maintenance of existing Superswitch assemblies.

• Single-piece packaging: Convenient for individual procurement.

Why Choose Siemens 3KX3552-1YD?

The Siemens 3KX3552-1YD is a dedicated 2NO + 2NC auxiliary switch for Siemens Superswitch 3KL83/3KA83 configurations. Siemens accessory documentation clearly differentiates it from 3KX3552-1YC, which provides 1NO + 1NC.

It is suitable for customers looking to buy or source Siemens Superswitch auxiliary switches for switch-position indication, control, interlocking, monitoring, maintenance and replacement requirements.

For SB Smart, this product is best presented as a Siemens industrial electrical auxiliary switching accessory for supply and procurement across India.

Delivery Across India

SB Smart supplies Siemens industrial electrical products and Superswitch accessories across Faridabad, Gurgaon/Gurugram, Delhi NCR, Haryana, Noida, Punjab, Mumbai and other major Indian cities.

Major delivery locations include:

• Faridabad

• Delhi

• Gurgaon/Gurugram

• Delhi NCR

• Noida

• Greater Noida

• Haryana

• Punjab

• Mumbai

• Pune

• Ahmedabad

• Bengaluru

• Hyderabad

• Chennai

• Kolkata

• Jaipur

• Chandigarh

• Lucknow

• Indore

• Surat

• Vadodara

• Nagpur

• Coimbatore

• And other major cities across India

Frequently Asked Questions

1. What is Siemens 3KX3552-1YD?

The 3KX3552-1YD is a Siemens Auxiliary Switch with 2NO + 2NC contacts for compatible Superswitch 3KL83/3KA83 configurations.

2. What does 2NO + 2NC mean?

It means the accessory provides two Normally Open contacts and two Normally Closed contacts.

3. Which Superswitch models are compatible?

It is specified for 3KL831/832/833/834 and 3KA831/832/834/835 switch configurations.

4. Is 3KX3552-1YD a 1NO + 1NC auxiliary switch?

No. The exact article is 2NO + 2NC. The 1NO + 1NC version is 3KX3552-1YC.

5. What can the auxiliary contacts be used for?

They can be used for compatible status indication, switch-position feedback, control, monitoring and interlocking circuits.

6. Is it suitable for industrial panels?

Yes, for compatible Siemens Superswitch installations requiring additional auxiliary contacts.

7. What is the difference between 1YC and 1YD?

3KX3552-1YC = 1NO + 1NC
3KX3552-1YD = 2NO + 2NC

Both are specified for the 3KL83/3KA83 Superswitch family.

8. What is the standard package quantity?

The standard package quantity is 1 piece.

9. Can it be used with every Superswitch?

No. Different Superswitch sizes use different auxiliary-switch article numbers. The 3KX3552-1YD is for the 3KL83/3KA83 family.

10. Where can I buy Siemens 3KX3552-1YD in India?

SB Smart supplies Siemens industrial electrical products and Superswitch accessories in India for industrial buyers, panel builders, maintenance requirements and replacement procurement.