ABB e1t 0s 24dc abb expansion relay

Why Choose the ABB E1T 0s 24DC 2TLA010030R0000 Safety Expansion Relay?

The ABB E1T 0s 24DC 2TLA010030R0000 is a compact safety expansion relay designed to increase the number of safe relay outputs available from an existing machine safety relay. Part of the ABB Jokab Safety E1T range, it provides four redundant normally open outputs for controlling additional contactors, actuators and hazardous machine functions from a primary safety circuit.

Operating from a 24 V DC supply, the E1T 0s version provides 4 NO relay outputs with no intentional switch-off delay. The module uses mechanically operated relay monitoring so that the expansion relay can be supervised by the connected safety relay, helping ensure that an output contact fault prevents a new ready signal from being established.

With a slim 22.5 mm DIN rail housing, detachable connector blocks and a maximum resistive switching capacity of 6 A at 250 V AC, the E1T provides a practical way to expand safety outputs without duplicating the complete primary safety-control circuit. The 2TLA010030R0000 is a legacy ABB Jokab Safety product and is superseded within ABB's Sentry range by the BSR23 24VDC.

Key Advantages

• Designed specifically for expanding the outputs of safety relays.
• 24 V DC supply compatible with common industrial safety-control systems.
• 4 NO redundant relay outputs for additional safety-controlled loads.
• 0 s intentional delay for immediate output switching.
• Mechanically operated relay monitoring supports fault detection through the primary safety relay.
• Maximum resistive switching capacity of 6 A at 250 V AC.
• Compact 22.5 mm width saves control-panel space.
• Detachable connector blocks simplify installation and servicing.
• Suitable for expanding safety circuits controlling multiple machine functions.

Key Features

• ABB Jokab Safety E1T safety expansion relay.
• 24 V DC ±15% operating voltage.
• 1.5 W power consumption.
• 4 normally open relay outputs.
• 0 s nominal time delay.
• Maximum resistive AC switching capacity of 6 A at 250 V AC / 1500 VA.
• Maximum resistive DC switching capacity of 6 A at 24 V DC / 150 W.
• Maximum total switching capacity of 12 A distributed across all contacts.
• Mechanically operated internal relays for monitoring through the connected safety relay.
• Silver contacts with gold flash.
• Detachable connector blocks.
• 35 mm DIN rail mounting.
• Slim 22.5 mm wide enclosure.

Reliable Safety Output Expansion for Industrial Machinery

The ABB E1T allows additional safety-controlled machine functions to be connected to an existing safety relay without requiring a separate primary safety relay for each load. When the connected safety relay enables the E1T, its internal relays energise and the four normally open outputs can switch downstream contactors or other safety-related control devices.

The internal relays are mechanically operated and can be monitored through the E1T test circuit. If an output contact becomes welded or otherwise fails to return correctly, the monitoring arrangement prevents the primary safety relay from receiving the required ready condition. The 0 s version has no intentional delayed release, making it suitable where additional safety outputs need to respond immediately to a stop command.

Typical Applications

• Expansion of existing machine safety relay outputs.
• Emergency-stop safety systems requiring additional outputs.
• Safety gate and interlocking circuits.
• Control of multiple safety contactors.
• Machine shutdown and hazardous-motion isolation circuits.
• Production machinery and automated equipment.
• Conveyor and material-handling safety systems.
• Industrial control panels requiring additional redundant safety contacts.