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Series-MCS
Mini Current Switches for Fuse Boxes & Panels, Adjustable Set Points Up to 1 A
- Integral mounting flange for quick installation
- Compact size fits in any space
Product Overview
- Applications HVAC
- Electrical Output 0.3 A @ 130 Vac/ Vdc
- Enclosure Ratings UL94 V-0
- Hysteresis 0.01
- LED Indicators Red/Green
- Materials ABS
- Measurement Type Current
- Operating Temperature, Max 122 °F
- Operating Temperature, Min 32 °F
- Output Detail Isolated, N.O. 0.3 A @ 130 V DC/AC
- Relative Humidity 10 to 95% RH, Non-Condensing
- Response Time <200 ms
- Series ID Series-MCS
- Setpoint Type Adjustable
- Weight 0.5 oz
Supported Applications
The Dwyer Series MCS Miniature Current Switches are designed for monitoring current usage in fuse boxes and small control panels. These self-powered devices provide an isolated output signal to indicate when measured AC current reaches a user-adjustable set point.
Operating Conditions & Performance
The series operates within an ambient temperature range of 32 to 122°F (0 to 50°C) and supports humidity levels from 10 to 95% RH (non-condensing). Two distinct measurement ranges are available depending on the model configuration: MCS-111050 covers 0.5 to 50 A AC continuous, while MCS-111001 covers 0.01 to 1 A AC continuous.
Performance specifications include a response time of <200 ms and hysteresis of 1%. The unit features an isolated N.O. output rated at 0.3 A @ 130 V DC/AC. No external power supply is required as the device is self-powered.
Configuration Options
The Series MCS offers two primary configurations to accommodate different installation constraints and current levels:
- Solid Core (MCS-111050): Designed for applications where a power conductor passes through the sensing hole. This version supports currents from 0.5 A up to 50 A AC continuous.
- No Core (MCS-111001): Features terminal blocks that accept circuit line and load connections directly, supporting currents up to 1 A AC continuous with a minimum set point of 0.01 A.
The housing is constructed from UL 94 V-0 flammability rated ABS with an insulation class of 600 V. Both models include LED indicators for power status and switch activation, along with a potentiometer for adjusting the set point.
Key Product Differences
The primary distinction between variants lies in their physical construction and minimum current detection capabilities:
- MCS-111050 (Solid Core): Dimensions are 63/64" [25.15] height, 1-21/32" [42.25] width, and 2-1/32" [51.73] depth.
- MCS-111001 (No Core): Dimensions are 63/64" [25.15] height, 2-31/64" [63.03] width, and 2-1/32" [51.73] depth.
The series carries CE and cULus approvals. Users must derate the current capacity when using multiple turns to increase measured current; failure to do so may result in damage to the unit.
