SBB Em 3/3
Em 3/3 18816
Type and origin Power type Diesel-electric Builder SLM, BBC/SAAS Build date 1959–1963[1] Total produced 42
Specifications Configuration: ​  • Whyte 0-6-0DE  • UIC C Gauge 1,435 mm (4 ft 8+1⁄2 in) Wheel diameter 1,610 mm (63.4 in) Length 10,020 mm (32 ft 10 in) Loco weight 49 tonnes (48.2 long tons; 54.0 short tons)
Performance figures Maximum speed 65 km/h (40 mph) Power output 440 kW (590 hp)
Career Operators Swiss Federal Railways Numbers 18801–18841 / SZU 11 Withdrawn 2025

The SBB Em 3/3 is a diesel shunting locomotive of the Swiss Federal Railways (SBB). They were built between 1959 and 1963, with a total of 42 units being manufactured by the Swiss Locomotive and Machine Works.^[1] They were designed to perform shunting duties for the SBB and were assigned running numbers 18801 to 18841 and SZU 11 Leu.^{[citation needed]}

Under the SBB they are classified as light shunters.^{[citation needed]} Under SBBs later UIC classification system they were designated as being Em 830 class locomotives while being numbered 000 to 040.^{[citation needed]}

• List of stock used by Swiss Federal Railways

• Photos