The CM-PAS.41S Phase Monitoring Relay is a precision device from ABB's CM three-phase monitors series, designed specifically for monitoring critical phase parameters in three-phase electrical systems. It operates reliably within a rated control supply and measuring voltage range of 300-500 V AC, making it ideally suited for industrial environments and large machinery that require three-phase power integrity. This relay offers comprehensive protection by continuously monitoring phase failure, phase sequence, and phase unbalance, which are essential to preventing equipment damage due to incorrect phase connections or power interruptions. Its configurable ON delay, adjustable from instantaneous up to 30 seconds, enables tailored response times to specific application needs, improving system stability. The relay features a robust 2 c/o (SPDT) output contact configuration rated at 250 V and 4 A, allowing for dependable switching control of connected devices. The device employs screw terminal connections with double-chamber cage technology, ensuring secure wiring and ease of installation. Additionally, an optional sealable transparent cover accessory safeguards against unauthorized tampering, enhancing operational security. Designed for flexible installation on standard TH35 DIN rails, the CM-PAS.41S conforms to multiple international standards including IEC, UL, and CSA requirements, guaranteeing quality and safety compliance. It is an essential component for protecting three-phase electrical networks from faults and ensuring continuous, reliable operation of industrial power systems.
Key Features
| Features | Description |
|---|---|
| Rated Control Supply Voltage / Measuring Voltage | 300-500 V AC |
| Phase Parameters Monitored | Phase Failure, Phase Sequence, Phase Unbalance |
| Output Contacts | 2 c/o (SPDT) rated at 250 V / 4 A |
| Adjustable ON Delay | Instantaneous to 30 seconds (0.1-30 s) |
| Connection Type | Screw connection with double-chamber cage terminals |
| Protection Cover | Optional sealable transparent cover to prevent unauthorized adjustments |
| Mounting | DIN Rail TH35-15 and TH35-7.5 (IEC 60715 compliant) |
| Degree of Protection | IP50 housing, IP20 terminals |
| Standards Compliance | IEC/EN 63000, IEC/EN 60255-27, IEC/EN 61000-6-2, IEC/EN 61000-6-3, UL 508, CSA C22.2 No.14 |
| Electrical & Mechanical Durability | 100,000 cycles AC-12 electrical, 30,000,000 cycles mechanical durability |
| Attributes | Description |
|---|---|
| Operating Voltage Range | 300-500 V AC (L-L) |
| Start-Up Delay | 200 ms |
| Tripping Delay (ON) | 0 s or adjustable 0.1 to 30 s |
| Rated Frequency | 50/60 Hz |
| Output Contact Current Ratings | 4 A AC-12 (230 V), 3 A AC-15 (230 V), 4 A AC-15 (24 V), 2 A DC-12 (24 V), 10 mA DC-13 (24 V minimum) |
| Rated Insulation Voltage (Ui) | 300 V AC |
| Rated Impulse Withstand Voltage (Uimp) | 6 kV input, 4 kV output |
| Terminal Type | Screw terminals with double-chamber cage connection |
| Connecting Capacity | Flexible and rigid cables ranging from 0.5 to 4 mm² |
| Tightening Torque | 0.6 - 0.8 N·m (8 mm wire stripping length) |
| Mounting Position | Any |
| Degree of Pollution | 3 |
| Overvoltage Category | III |
| Flammability Rating | V-0 according to UL94 |
| Dimensions & Weight | Fits standard 35mm DIN rails; weight data available on request |
*Disclaimer: The above description has been AI-generated and has not been audited or verified for accuracy. It is recommended to verify product details independently before making any purchasing decisions.
The ON delay on the CM-PAS.41S is adjustable from instantaneous to 30 seconds (0.1 to 30 s), allowing customization of the relay's trip response time to avoid nuisance tripping from transient voltage fluctuations and ensuring stable operation in varying industrial environments.
Yes, the CM-PAS.41S simultaneously monitors phase failure, phase sequence, and phase unbalance, providing thorough protection and detection capabilities for three-phase electrical systems.
The relay uses screw terminals with double-chamber cage connection technology designed for flexible, flexible with ferrule, and rigid conductors ranging from 0.5 to 4 mm² cross-section, ensuring secure and versatile wiring options.
Yes, it is designed for easy mounting on TH35-15 and TH35-7.5 standard DIN rails compliant with IEC 60715, facilitating straightforward integration into existing electrical enclosures.
An optional sealable transparent cover is available as an accessory, which protects against unauthorized adjustments, enhancing the security of relay settings in critical applications.
Brand: abb
Country Of Origin: Germany
The CM-PAS.41S relay is from the CM three-phase monitors range. This relay operates
with a rated control supply voltage / three-phase measuring voltage of 300-500 V AC
and has a 2 c/o output with contacts rated at 250 V / 4 A. The CM-PAS.41S monitors
the phase parameters phase failure, phase sequence and phase unbalance. An ON
delay is adjustable over a range of instantaneous to 30 s (0, 0.1-30 s). A sealable
transparent cover for protection against unauthorized changes is available as
accessory. The device offers screw connection technology with double-chamber cage
connection terminals.
Technical
Phase failure detection
Phase sequence monitoring
Phase unbalance detection
Function
(L-L) 300 ... 500 V AC Measuring Range
200 ms start-up delay
0 s or 0.1 ... 30 s tripping delay (ON)
Time Range
(L-L) 300 ... 500 V AC Rated Control Supply
Voltage (Us)
Supply Circuit 50/60 Hz Rated Frequency (f)
2 c/o (SPDT) contacts Output
Screw Terminals Terminal Type
(230 V) 4 A Rated Operational
Current AC-12 (Ie)
(230 V) 3 A Rated Operational
Current AC-15 (Ie)
(24 V) 4 A Rated Operational
Current DC-12 (Ie)
(24 V) 2 A Rated Operational
Current DC-13 (Ie)
24 V
10 mA
Minimum Switching
Capacity
Input Circuit 6 kV
Output Circuit 4 kV
Rated Impulse
Withstand Voltage (Uimp
)
Input Circuit / Output Circuit 600 V
Output Circuit 1 / Output Circuit 2 300 V
Rated Insulation Voltage
(Ui)
Housing IP50
Terminals IP20
Degree of Protection
III Overvoltage Category
3 Pollution Degree
Output Circuit NC - F Type Fuses 6 A
Output Circuit NO - F Type Fuses 10 A
Short-Circuit Protective
Devices
AC-12 100000 cycle Electrical Durability
30000000 cycle Mechanical Durability
Flexible with Ferrule 1x 0.5 ... 2.5 mm²
Flexible with Ferrule 2x 0.5 ... 1.5 mm²
Flexible with Insulated Ferrule 1x 0.5 ... 2.5 mm²
Flexible with Insulated Ferrule 2x 0.5 ... 1.5 mm²
Flexible 1x 0.5 ... 2.5 mm²
Flexible 2x 0.5 ... 1.5 mm²
Rigid 1x 0.5 ... 4 mm²
Rigid 2x 0.5 ... 2.5 mm²
Connecting Capacity
0.6 ... 0.8 N·m Tightening Torque
8 mm Wire Stripping Length
0.8 x 4
4.5
Pozidriv 1
Recommended Screw
Driver
2 CM-PAS.41S
© 2023 ABB. All rights reserved. Subject to change without notice 2023/10/30
1 ... 6 Mounting Position
TH35-15 (35 x 15 mm Mounting Rail) acc. to IEC 60715
TH35-7.5 (35 x 7.5 mm Mounting Rail) acc. to IEC 60715
Mounting on DIN Rail
CAN/CSA C22.2 No.14
IEC/EN 63000
IEC/EN 60255-27
IEC/EN 61000-6-2
IEC/EN 61000-6-3
UL 508
Standards
Technical UL/CSA
Output Circuit 300 V AC Maximum Operating
Voltage UL/CSA
B300 Contact Rating UL/CSA
Flexible 1x 18-14 AWG
Flexible 2x 18-16 AWG
Rigid 1x 20-12 AWG
Rigid 2x 20-14 AWG
Connecting Capacity
UL/CSA
7.08 in·lb Tightening Torque
UL/CSA
B300 Pilot Duty UL/CSA
V-0 Flammability According
to UL94
