CR-M3SS ABB Plug-in control relay module Spring terminal Double
conversion contact
Product Overview
ABB CR-M3SS is a high-performance plug-in control relay module in
the ABB CR-M series, specifically designed for industrial
automation, process control and OEM equipment that requires a
medium number of contacts and high installation efficiency. This
product adopts the Spring Clamp technology and supports tool-free
rapid wiring, significantly enhancing the assembly and maintenance
speed. Equipped with 3 sets of conversion contacts (3CO), it can
simultaneously achieve multi-channel signal switching, status
feedback and interlock control. As a universal contact module, the
CR-M3SS must be used in conjunction with the CR-PSS series sockets.
The coil voltage is determined by the selected socket, achieving
highly flexible system integration.
Key features
✅ spring terminal, efficient wiring
No screwdriver is needed. Just insert the wire directly and it will
lock automatically, saving more than 50% of the wiring time
It has excellent anti-vibration performance and is suitable for
harsh environments such as mobile devices, robots, and rail transit
✅ 4 sets of conversion contacts, flexible function
Each group of contacts includes a common terminal (C), normally
open (NO), and normally closed (NC), supporting single-throw
double-throw (SPDT) control
It can realize various control logics such as signal selection,
interlocking, and status feedback
✅ modular design for easy maintenance
When a fault occurs, only the relay body needs to be pulled out for
replacement without disassembling any wiring
When combined with the CR-PSS socket, the overall width is only
17.5mm, saving the space of the control cabinet
✅ high reliability contacts
Contact material: AgNi (silver-nickel alloy), arc resistant and
oxidation resistant
It has a long electrical life and is suitable for control circuits
with frequent switching
✅ global certification, strong compatibility
Complies with the IEC/EN 61810-1 standard
Passed international certifications such as CE, UL, CSA and CCC
Basic parameters
Model: CR-M3SS
Series ABB CR-M plug-in Relay (Spring Terminal Type)
Contact configuration: 3 CO (3 sets of conversion contacts: each
set contains C/NO/NC)
Contact material AgNi (silver-nickel alloy)
Rated working current • AC-15:3 A @ 230 V AC
• DC-13 2A @ 24 V DC
The maximum switching voltage is 250 V AC / 30 V DC
The mechanical life is ≥ 10⁷ operations
Electrical life (AC-15) ≥ 100,000 times (3 A, 230 V AC)
Insulation voltage (Ui) : 250 V
Pollution level 2
Protection grade IP20 (after installation with CR-PSS socket)
Operating temperature range: -25°C to +55°C
Installation method: Insert into the CR-PSS series socket (35mm DIN
rail installation)
Wiring method: Spring terminal. Applicable wire cross-section:
0.08-2.5mm ² (single strand or flexible wire, no end terminals
required)
Dimensions (width × height × depth) : 17.5mm × 60mm × 90mm
The weight is approximately 58 grams
Typical application scenarios
Industrial automation
It is used for the starting, stopping and protection of
medium-voltage motors, such as water pumps, fans, compressors and
other equipment.
Power transmission and distribution
Load switching and protection in scenarios such as medium-voltage
switch cabinets and substations.
Energy and infrastructure
Auxiliary control of photovoltaic inverters, pumping stations of
water treatment plants, and backup power switching systems.
OEM equipment integration
As a standard component embedded in the OEM control cabinet, it
enhances the reliability of the entire machine.
Product Images
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