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2CDE165001R2001 ABB E236-US1.1 Undervoltage Relay 1CO
ABB E236-US1.1 is a single-module undervoltage monitoring relay with a 195 V fixed threshold, 5% hysteresis and one changeover contact for monitoring 3N 400/230 V AC electrical systems.
£97.99
Why Choose the ABB E236-US1.1 Undervoltage Relay?
The ABB E236-US1.1 is a compact undervoltage monitoring relay designed to monitor AC supply voltages and provide a changeover output when the monitored voltage falls below its defined threshold. As part of the ABB E236 voltage monitoring series, it is designed for reliable supply monitoring in low-voltage distribution boards, switchgear and building electrical installations.
The E236-US1.1 monitors three phases relative to the neutral conductor and uses a fixed 195 V switching threshold with 5% fixed hysteresis. If the voltage on one of the monitored phases falls below the switching threshold, the output relay de-energises, allowing downstream control or signalling equipment to respond to the undervoltage condition.
Designed for 3N 400/230 V AC systems, the E236-US1.1 features one changeover contact (1CO), a rated frequency of 50–60 Hz and a compact single-module DIN rail housing. Its fixed threshold makes it particularly suitable for installations requiring straightforward and dependable undervoltage supervision without adjustment.
Key Advantages
- Reliable undervoltage monitoring for low-voltage AC installations.
- Monitors three phases relative to neutral.
- 195 V fixed switching threshold for consistent operation.
- 5% fixed hysteresis helps prevent unstable relay switching around the threshold.
- 1CO changeover output contact for signalling or control circuits.
- Compact single-module DIN rail design for distribution boards and switchgear.
Key Features
- ABB E236 undervoltage monitoring relay series.
- 3N 400/230 V AC measuring system.
- 195 V fixed undervoltage threshold.
- 5% fixed hysteresis.
- One changeover contact (1CO).
- 50–60 Hz rated frequency.
- 200 ms release delay.
- IP20 protection rating.
- Single-module DIN rail mounting format.
Reliable Undervoltage Monitoring for Electrical Systems
Undervoltage monitoring relays supervise electrical supplies and provide a control signal when voltage falls below a predetermined level. This allows contactors, alarms, control systems or other equipment to respond to abnormal supply conditions before continued undervoltage operation causes disruption or equipment problems.
The ABB E236-US1.1 monitors each connected phase relative to neutral. Its fixed 195 V threshold and 5% hysteresis provide straightforward voltage supervision, while the changeover relay contact enables integration with external signalling and control circuits.
Typical Applications
- Three-phase low-voltage distribution systems.
- Electrical switchgear and distribution boards.
- Building power installations.
- Industrial control panels.
- Undervoltage alarm and signalling circuits.
- Supply monitoring for contactors and control systems.
Technical Specifications
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| Mounting Type | DIN rail | |
|---|---|---|
| Series | E236 | |
| ABB order code | 2CDE165001R2001 | |
| Product type | Undervoltage monitoring relay | |
| Output contact | 1CO changeover contact | |
| Measuring system | 3N, 400/230 V AC | |
| Switching threshold | 195 V | |
| Hysteresis | 5%, fixed | |
| Rated voltage | 250 V | |
| Rated frequency | 50–60 Hz | |
| Maximum switching capacity | 1250 VA | |
| Release delay | 200 ms | |
| Protection rating | IP20 | |
| Mounting type | 35 mm DIN rail | |
| Width in modular spacings | 1 | |
| Dimensions (H × W × D) | 87 × 17.5 × 60 mm | |
| Weight | approx. 0.066 kg | |
| EAN | 4016779651776 |
Frequently Asked Questions
What is the ABB E236-US1.1 used for?
The ABB E236-US1.1 is used to monitor AC supply voltage for undervoltage conditions and operate a changeover contact when a monitored phase falls below the specified threshold.
What is the switching threshold of the E236-US1.1?
The E236-US1.1 has a fixed switching threshold of 195 V with a fixed hysteresis of 5%.
What electrical system does the ABB E236-US1.1 monitor?
The relay is designed for 3N 400/230 V AC systems, monitoring the connected phases relative to the neutral conductor.
What output contact does the E236-US1.1 provide?
The E236-US1.1 provides one changeover contact (1CO) for connection to external control, signalling or protection circuits.
How is the ABB E236-US1.1 installed?
The relay is designed for 35 mm DIN rail mounting and occupies one modular spacing in an electrical distribution board or control panel.
Trusted ABB Voltage Monitoring
ABB E236 undervoltage monitoring relays provide dependable supervision of electrical supplies, combining compact DIN rail installation with straightforward relay outputs for integration into professional distribution, control and safety systems.
