
The ABB CM-MSS.32S is a thermistor motor protection relay designed to monitor and protect motors from dangerous temperature rises by detecting overheating in motor windings. It operates on a 24 V AC/DC control supply and features one sensor circuit that monitors PTC (Positive Temperature Coefficient) temperature sensors using the closed-circuit principle. The relay provides 2 c/o (SPDT) changeover contacts rated at 250 V / 4 A for flexible integration into motor control systems. It includes short-circuit detection and dynamic interrupted-wire detection capabilities, with options for automatic, manual, or remote reset after fault clearance. The device is ATEX-certified according to directive 94/9/EC for use in potentially explosive atmospheres and is equipped with a reset/test button. It features screw connection technology with double-chamber cage connection terminals and mounts on standard TH35-15 DIN rail. The compact design and IP50-rated housing make it suitable for industrial applications including machine tools, pumps, and compressors.
Item Details
- Brand Name: ABB
- Manufacturer: ABB
- Item Type Name: Thermistor Motor Protection Relay
- Product Family / Series: CM-MSS
- Model: CM-MSS.32S
- Part Number: 1SVR730712R0200
- Terminal Type: Screw terminals (double-chamber cage connection)
Product Specifications
- rated_control_supply_voltage: 24 V AC/DC
- output_type: 2 c/o (SPDT)
- contact_rating: 250 V / 4 A
- number_of_sensor_circuits: 1
- sensor_type: PTC thermistor
- detection_principle: Closed-circuit
- short_circuit_detection: Yes
- interrupted_wire_detection: Dynamic
- reset_options: Automatic, manual, or remote
- rated_insulation_voltage: 300 V
- rated_impulse_withstand_voltage: 4 kV
- mechanical_durability: 30 million cycles
- operating_temperature: -25 to +60 °C
- storage_temperature: -40 to +85 °C
- mounting: DIN rail TH35-15 (35 x 15 mm)
- protection_rating: IP50
Additional Details
- Certifications / Approvals: ATEX 94/9/EC, IEC/EN 60947-5-1, IEC/EN 60947-8, IEC/EN 60079-7, EN 50495, UL 508, CAN/CSA C22.2 No.14
- Ean Code: 4013614496684
- Reset Test Button: Yes
- Typical Applications: Machine tool industry, pumps, compressors
Measurements
- Weight: 130 g
- Dimensions: 103.7 x 22.5 x 85.6 mm (L x W x H)
- Gross Weight: 153.8 g
All PLC Direct products come with a 1-year warranty. The warranty is issued by PLC Direct. Warranty coverage commences at the date of purchase. The warranty is for mechanical defects or failures not caused by human factors including but not limited to (a) incorrect installation, (b) operating the unit in sub-optimal conditions or in scenarios not recommended by the manufacturer, (c) poor unit maintenance, etc. The warranty does not cover programming or software related issues.
If the product is eligible for PLC Direct’s warranty coverage and the customer encounters an issue with the product, we will request the item is shipped to us for diagnosis and examination. Regardless of the cause of product issues, the customer will bear responsibility for the cost of shipping the unit to PLC Direct for evaluation. Where the unit was damaged by human factors, we will offer a repair or replace quote; in cases where damage was caused by human factors, the customer is responsible for the cost of shipping the repaired/replaced unit from PLC Direct to the customer. Where the unit was not damaged by human factors but is covered by PLC Direct’s warranty, we will repair or replace the unit at our cost (or, in rare cases, refund you your purchase); in such cases, PLC Direct will bear the cost of shipping the repaired or replaced product back to the customer. It is up to PLC Direct’s discretion whether to repair, replace, or refund the customer in such cases. Diagnoses can take time to complete based on technician availability and the complexity of diagnosis.
In no event shall PLC Direct be liable for any damages except actual damages up to, but not exceeding, the amount paid to us for the product, including we shall not be liable for any consequential or indirect damages or lost profits whether or not advised of same.
PLC Direct offers free shipping worldwide. Product ship from a various warehouses worldwide based on the customer's and the product's location. The estimated delivery date on the product page is PLC Direct's best estimated assuming a US-based shipping destination.
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