ABB CA4-40NK Auxiliary Contact Block - 4P, Push-In Spring
Part Number: 1SBN010146R1240
Quick Summary
The ABB CA4-40NK Auxiliary Contact Block is a four-pole interface that provides reliable signaling for NF/NFZ/NFC contactors in industrial control panels. This design helps reduce wiring complexity and installation time, addressing common panel-build delays. IEC/EN 60947-5-1, UL 60947-5-1, and CSA certifications ensure robust electrical safety and compatibility, while IP20 protection guards auxiliary terminals in standard environments. RoHS and REACH declarations support global procurement and compliance workflows. For OEMs and maintenance teams, the CA4-40NK offers clear diagnostic visibility, consistent performance across voltages, and scalable signaling for multi-contactor configurations with minimal panel footprint.
Product Information
Extended Description
1SBN010146R1240 ABB: CA4-40NK is a 4-pole front mounted auxiliary contact block equipped with Push-In Spring terminals. CA4-..N version offers terminal assortment matching the marking of 4-pole NF(C)(Z)(B)..K contactor relays. CA4-40NK is available with 4 N.O. instantaneous contacts for standard industrial environments. With the Push-in Spring terminals, one push is all you need for a faster than ever installation, an easier than ever wiring and a reliable as ever connection.
Minimum Order Quantity
1 piece
Customs Tariff Number
85389099
Data Sheet, Technical Information
1SBC100214C0202 - Main catalog Motor protection and control Manual motor starters, contactors and overload relays (PDF) - Edition 2024
Instructions and Manuals
Installation instructions AF(C)09...38(Z)(B)..K Contactors, NF(C)(Z)(B)..K Contactor relays and CA4..K, CAL4..K, LDC4K Accessories
Instructions and Manuals (Part 2)
Contactors and Overload relays guide
CAD Dimensional Drawing
Information - 2D and 3D files for CAD systems
Product Net Width
43 mm
Product Net Depth / Length
39.5 mm
Product Net Height
45 mm
Product Net Weight
0.05 kg
Number of Auxiliary Contacts NO
4
Number of Auxiliary Contacts NC
0
Number of Poles
4P
Standards
IEC/EN 60947-5-1, UL 60947-5-1, CSA C22.2 No. 60947-5-1-14
Rated Operational Voltage
Auxiliary Circuit 690 V
Rated Frequency (f)
Auxiliary Circuit 50 / 60 Hz
Conventional Free-air Thermal Current (Ith)
acc. to IEC 60947-5-1, Θ = 40 °C 16 A
Rated Operational Current AC-15 (Ie)
(500 V) 2 A | (690 V) 2 A | (24 / 127 V) 6 A | (220 / 240 V) 4 A | (400 / 440 V) 3 A
Rated Operational Current DC-13 (Ie)
(24 V) 6 A / 144 W | (48 V) 2.8 A / 134 W | (72 V) 1 A / 72 W | (110 V) 0.55 A / 60 W | (125 V) 0.55 A / 69 W | (220 V) 0.27 A / 60 W | (250 V) 0.27 A / 68 W | (400 V) 0.15 A / 60 W | (500 V) 0.13 A / 65 W | (600 V) 0.1 A / 60 W
Rated Short-time Withstand Current Low Voltage (Icw)
for 0.1 s 140 A | for 1 s 100 A
Rated Insulation Voltage (Ui)
acc. to IEC 60947-5-1 690 V | acc. to UL/CSA 600 V
Rated Impulse Withstand Voltage (Uimp)
6 kV
Maximum Electrical Switching Frequency
(AC-15) 1200 cycles per hour | (DC-13) 900 cycles per hour
Maximum Mechanical Switching Frequency
3600 cycles per hour
Connecting Capacity Auxiliary Circuit
Flexible with Ferrule 1/2x 0.5 ... 2.5 mm² | Flexible with Insulated Ferrule 1/2x 0.5 ... 1.5 mm² | Flexible 1/2x 0.5 ... 2.5 mm² | Rigid Solid 1/2x 1 ... 2.5 mm²
Wire Stripping Length
Auxiliary Circuit 10 mm
Degree of Protection
acc. to IEC 60529, IEC 60947-1, EN 60529 Auxiliary Terminals IP20
Terminal Type
Push-in Spring Terminals
Suitable For
NF22E | NFZ22E | NF31E | NFZ31E | NF40E | NFZ40E | NFC22E | NFC31E | NFC40E | NFZB22E | NFB22E | NFZB31E | NFB31E | NFZB40E | NFB40E
Product Name
Auxiliary Contact Block
Connecting Capacity Auxiliary Circuit UL/CSA
Rigid Solid 1/2x 18-14 AWG
Conflict Minerals Reporting Template (CMRT)
CMRT - Conflict Minerals Reporting Template
REACH Declaration
REACH - Letter of Confirmation for block contactors, contactor relays, installation contactors, mini contactors, mini contactor relays, thermal overload relays, electronic overload relays and related accessories
RoHS Information
RoHS II declaration for block contactors, installation contactors, mini contactors, mini contactor relays, thermal overload relays, electronic overload relays and related accessories
RoHS Status
Following EU Directive 2011/65/EU and Amendment 2015/863 July 22, 2019
WEEE B2C / B2B
Business To Business
WEEE Category
5. Small Equipment (No External Dimension More Than 50 cm)
ABS Certificate
ABS Certificate, AF(S)09 to AF(S)96 contactors, NF contactor relays and CA4, CC4, CAL4, CAT4 auxiliary contact blocks, TEF4 electronic timers
CB Certificate
CB Certificate CA4 4-pole and CAT4 auxiliary contact blocks for AF09...AF96 contactors and NF contactor relays
CCC Certificate
CCC Certificate CA4 4-pole, CAT4-11, VE4 AF accessories with screw, Ring tongue, spring and push-in terminals
Declaration of Conformity - CCC
CCC Declaration of Conformity, Auxiliary contacts, CAL4-**, CA4-**, CC4-**, Made in Czech Republic | CCC Declaration of Conformity, Auxiliary contacts, CA4-***,CAT4-*** ,VE4, Made in Poland
Declaration of Conformity - CE
EU Declaration of Conformity CA(L)(T)4.., CC4, CA(L)(T)4..RT, CA(L)4..K, CA(L)(T)4..S auxiliary contact blocks, VM4, VM96-4, VEM4(K) interlocks
Declaration of Conformity - UKCA
UK Declaration of Conformity CA(L)(T)4.., CC4, CA(L)(T)4..RT, CA(L)4..K, CA(L)(T)4..S auxiliary contacts, VM4, VM96-4, VEM4(K) interlocks
DNV Certificate
DNV Certificate for NF, NF..S, NF..K contactor relays and CA4, CAL4, CAT4 auxiliary contacts with screw, spring or push-in terminals
LR Certificate
LRS Certificate AF(S)09..(K) ... AF96 3 and 4-pole contactors and CA(L)4..(K), CAT4, CC4 auxiliary contact blocks
RMRS Certificate
RMRS Certificate CA4, CAT4, CAL4-11 - Auxiliary contacts for AF(S)09...AF(S)96, NF ranges, with screw, push-in and spring terminals
UL Certificate
UL-US Certificate of Compliance CA4, CC4, CAL4, CAT4, BX4, BX4-CA, BA4 accessories for AF09...AF96 contactors / NF contactor relays | UL-CA Certificate of Compliance CA4, CC4, CAL4, CAT4, BX4, BX4-CA, BA4 accessories for AF09...AF96 contactors / NF contactor relays
Package Level 1 Units
box 1 piece
Package Level 1 Width
46 mm
Package Level 1 Depth / Length
46 mm
Package Level 1 Height
46 mm
Package Level 1 Gross Weight
0.05 kg
Package Level 1 EAN
3471523131361
Object Classification Code
K
ETIM 7
EC000041 - Auxiliary contact block
ETIM 8
EC000041 - Auxiliary contact block
ETIM 9
EC000041 - Auxiliary contact block
eClass
V11.0 : 27371302
UNSPSC
39121522
IDEA Granular Category Code (IGCC)
4743 >> Auxiliary contact block
E-Number (Finland)
3708043
E-Number (Sweden)
3210659
Feature: Four normally open contacts in a 4P auxiliary block. Benefit: Expands signaling channels without adding relays, enabling more precise motor control diagnostics and reduced wiring complexity in NF/NFZ/NFC applications. Application: Used with ABB AF-series and NF contactors to monitor multiple contact outputs from a single accessory. Feature: Push-In Spring terminals. Benefit: Fast, tool-free wiring with secure, vibration-resistant connections; reduces field wiring time and eliminates loose-screw faults. Application: Ideal for high-vibration environments and quick field retrofits in control cabinets. Feature: Front-mounted design. Benefit: Compact installation in tight panels and improved accessibility for maintenance; minimizes panel footprint. Application: Suitable for retrofit projects and new panel builds with limited space. Feature: High-voltage and high-current ratings. Benefit: Supports auxiliary circuits up to 690 V and AC-15 and DC-13 switching scenarios, delivering reliable signaling under demanding industrial loads. Application: Suitable for motor starters, signaling circuits, and automation panels in 50/60 Hz systems. Feature: Comprehensive compatibility. Benefit: Broadly compatible with NF/NFZ/NFC series and a wide range of NF variants, reducing part number proliferation and simplifying spares management. Application: OEMs can standardize on a single auxiliary block across multiple contactor families. Feature: Robust compliance and documentation. Benefit: Certificated to IEC/EN, UL, and CSA standards with RoHS/REACH declarations, supporting audits and global sourcing. Application: Meet global procurement requirements and maintain traceability across supply chains.
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FAQs
The CA4-40NK is designed as a 4P auxiliary block for ABB NF/NFZ/NFC contactors, including NF22E, NFZ22E, NF31E, NFZ31E, NF40E, NFZ40E, NFC22E, NFC31E, NFC40E, and related variants. It mounts frontally and uses Push-In Spring terminals for fast, secure connections, reducing wiring time during panel assembly.
Rated auxiliary circuit voltage is 690 V with 50/60 Hz frequency. AC-15 currents are up to 2 A at several voltages, and DC-13 currents vary by voltage, up to 6 A at 24 V, with higher voltages lowering permissible current. Short-time withstand current (Icw) is 140 A for 0.1 s and 100 A for 1 s, ensuring reliable signaling under transient conditions.
The block conforms to IEC/EN 60947-5-1, UL 60947-5-1, and CSA C22.2 No. 60947-5-1-14. It carries RoHS II declarations, REACH compliance, and is designed for IP20 protection. This combination supports global deployment, audits, and regulatory adherence in industrial environments.
Auxiliary circuit wiring supports flexible leads with ferrules 0.5 to 2.5 mm² and rigid solid conductors from 0.5 to 2.5 mm². Ferrule-compatible and standard flexible wiring options streamline field connections, and the recommended stripping length is 10 mm, aiding consistent terminations across installations.
Push-In Spring terminals reduce crimping and torque steps, enabling faster terminations with fewer welding or loosening issues over time. The 4P NO configuration simplifies signaling for multi-channel monitoring, while the front-mounted design and compliance with international standards improve install efficiency, reduce rework, and enhance long-term control reliability in automated panels.