ABB CA4-31ERT Auxiliary Contact Block - IEC/UL/CSA
Part Number: 1SBN010142R1031
Quick Summary
Auxiliary Contact Block CA4-31ERT provides a four-pole signaling interface for control circuits in motor and automation panels. In crowded control cabinets, secure, vibration-resistant wiring can be hard to achieve—this device uses screw terminals for ring tongue ferrules and non-detachable conic washers to speed assembly. It meets IEC/EN 60947-5-1, UL 508, and CSA C22.2 No. 14-10 with IP20 protection on auxiliary conductors, offering global compliance. Designed for seamless integration with ABB AF contactors and CAD-enabled workflows, it helps engineers lower installation time while improving signaling reliability.
Product Information
Extended Description
1SBN010142R1031 ABB: CA4-31ERT is a 4-pole front mounted auxiliary contact block equipped with screw terminals for connection with ring tongue ferrules. CA4-..E version offers terminal assortment matching the marking of 3-pole AF26..38(Z)B-30-00RT, 4-pole AF09..38(Z)B-40-00RT or AF09..38(Z)B-22-00RT contactors. CA4-31ERT is available with 3 N.O. and 1 N.C. instantaneous contacts for standard industrial environments. Screw terminals for connection with ring tongue ferrules, includes non-detachable screw with conic washer for a fast and secure tightening of cables.
Minimum Order Quantity
1 piece
Customs Tariff Number
85389099
Data Sheet, Technical Information
Motor control and protection for Rolling stock application_PDF
Instructions and Manuals
Installation instructions AF09...38(Z)B-..RT Contactors, NF(Z)B..ERT Contactor relays and CA4..RT, CAL4..RT, CAT4..RT, LDC4RT 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
45 mm
Product Net Depth / Length
39.8 mm
Product Net Height
43 mm
Product Net Weight
0.05 kg
Number of Auxiliary Contacts NO
3
Number of Auxiliary Contacts NC
1
Number of Poles
4P
Standards
IEC/EN 60947-5-1, UL 508, CSA C22.2 No. 14-10
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
Degree of Protection
acc. to IEC 60529, IEC 60947-1, EN 60529 Auxiliary Terminals IP20
Tightening Torque
Auxiliary Circuit 1.2 N·m
Terminal Type
Ring-Tongue Terminals
Suitable For
AF09B | AF09ZB | AF12B | AF12ZB | AF16B | AF16ZB | AF26B | AF26ZB | AF30B | AF30ZB | AF38B | AF38ZB
Product Name
Auxiliary Contact Block
Tightening Torque UL/CSA
Auxiliary Circuit 11 in·lb
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)
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
UR Certificate
UR Certificate of Compliance 2 or 4-pole CA4..RT, CAL4..RT, CAT4..RT for AF09..38(Z)B..RT contactors / NF(Z)B..RT 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
3471523130463
Package Level 2 Units
box 0 piece
Package Level 2 Width
0 mm
Package Level 2 Depth / Length
0 mm
Package Level 2 Height
0 mm
Package Level 3 Units
0 piece
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
Feature → Business Impact → Application: The CA4-31ERT delivers 4P auxiliary signaling with 3 normally open and 1 normally closed contacts, enabling precise motor-control signaling while preserving compact panel layouts. This directly reduces wiring complexity and system risk, translating to faster commissioning and lower field fault rates in manufacturing lines. Application-wise, it suits AF09 to AF38 series contactors in conveyors, pumps, and machine controls where reliable signaling improves uptime and safety. Feature → Compatibility → Installation: Screw terminals designed for ring tongue ferrules provide robust, vibration-resistant connections compatible with standard DIN-rail panels, easing field maintenance and retrofit work. Feature → Compliance → Operational Excellence: Rated for auxiliary circuits up to 690 V, 50/60 Hz, and with IP20 protection, it supports global installations while preserving safety and traceability for audits. Feature → Reliability → Cost Control: The conic washers and secure tightening (1.2 N·m) minimize loosening under vibration, reducing maintenance costs and extending service intervals. Feature → Documentation → Efficiency: Availability of CAD drawings and data sheets accelerates engineering integration, improves accuracy in BOMs, and supports lean procurement workflows.
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FAQs
The CA4-31ERT is designed as a 4-pole front-mounted auxiliary block for ABB AF contactors, specifically AF09 through AF38 families. It provides three normally open and one normally closed contact for signaling in motor control applications. Terminals are screw-connected and compatible with ring tongue ferrules, ensuring reliable, vibration-resistant wiring in demanding industrial panels.
Wire the block using the screw terminals designed for ring tongue ferrules, ensuring a secure connection. Tighten to 1.2 N·m for the auxiliary circuit. Align and mate with the corresponding AF contactor assembly, using the designated NO/NC configuration. Refer to installation instructions AF09...38(Z)B-..RT for step-by-step guidance and safety considerations.
Yes. The block meets IEC/EN 60947-5-1, UL 508, and CSA C22.2 No. 14-10, with IP20 protection for auxiliary terminals. It is RoHS/RoHS II compliant and supports WEEE requirements, making it suitable for global electrical installations in both EU and North American environments.
The auxiliary block has a compact footprint with a product net width of 45 mm, depth of 39.8 mm, and height of 43 mm. It weighs approximately 0.05 kg, making it suitable for dense panel layouts and minimizing enclosure space impact while supporting robust field wiring.
CAD drawings and technical information are available from ABB’s repository. The product page lists a CAD Dimensional Drawing and the Data Sheet 'Motor control and protection for Rolling stock application' to support accurate integration, BOM creation, and quick design validation in CAD/PDM workflows.